
GITNUXSOFTWARE ADVICE
Manufacturing EngineeringTop 10 Best Digital Design Simulation Software of 2026
Top 10 digital design simulation software tools ranked for engineers, with COMSOL Multiphysics reviewed for modeling strengths and tradeoffs.
How we ranked these tools
Gitnux editors write the brief first: the topic, the inclusion rules, and the frame for what belongs.
Agents extract product evidence with provenance, then collect written reviews and transcribe video reviews and podcasts.
Framework: Features 40% · Ease 30% · Value 30%
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COMSOL Multiphysics is the best fit when teams need one coupled physics model workflow to drive product validation, whereas COMSOL’s entry point is usually Dassault Systèmes SIMULIA for PLM-led multiphysics CAE with repeatable campaign runs, and if you’re budget-tight for circuit-style checks, LTspice is the cheapest way to keep simulations repeatable.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
COMSOL Multiphysics
Multiphysics coupling with shared geometry and parameters across sequential studies in one model tree.
Best for: Fits when teams need one coupled model workflow for product validation across physics domains.
Dassault Systèmes SIMULIA
Editor pickSimulation campaign orchestration that keeps parametric model variants consistent from setup through execution and results comparison.
Best for: Fits when PLM-driven teams need repeatable multiphysics CAE with campaign automation and controlled workflows.
PTC Creo Simulation Live
Editor pickIn-cad, real-time FEA updates tied to Creo model edits, enabling rapid what-if decisions during geometry changes.
Best for: Fits when teams need rapid structural validation iterations inside Creo before committing to full offline studies.
Comparison Table
COMSOL Multiphysics
enterprisePhysics-based modeling and simulation platform.
Multiphysics coupling with shared geometry and parameters across sequential studies in one model tree.
COMSOL Multiphysics is built around coupled-physics formulations that let a single model share geometry, parameters, and study steps across multiple physics interfaces. The app-based environment includes multiphysics couplings such as fluid-structure interactions, conjugate heat transfer, and electromagnetic-thermal workflows. Study setup supports boundary conditions, solver settings, time-step control, and convergence tolerance controls tied to each physics feature.
A key tradeoff is that deep model control can increase project complexity for teams focused on one discipline analysis. COMSOL fits best when a verification and validation workflow needs repeatable parameter sweeps across coupled effects, or when results must be compared across frequency-domain and transient regimes from the same model structure. A separate case where COMSOL is a strong fit is system-level digital twin prototypes that require tight coupling between physics and user-defined components.
- +Coupled-physics studies share one parameterized model and geometry
- +Granular solver controls for transient stepping and convergence tuning
- +Parametric sweeps and design-of-experiments workflows support batch studies
- +Scripting enables repeatable study runs and custom automation
- –Complex coupled models can slow setup and increase validation effort
- –Automation requires script discipline and consistent naming conventions
Mechanical engineering design teams
Validate thermal stress under coupled loading
Faster coupled-effect decisions
Electronics and EM analysts
Run frequency and transient EM workflows
Consistent results across regimes
Show 1 more scenario
R&D systems engineering teams
Prototype physics-based digital twins
Tunable testbench automation
Uses shared parameters to connect custom components with physics models for repeatable scenario runs.
Best for: Fits when teams need one coupled model workflow for product validation across physics domains.
Dassault Systèmes SIMULIA
enterpriseRealistic simulation for multiphysics and virtual testing.
Simulation campaign orchestration that keeps parametric model variants consistent from setup through execution and results comparison.
SIMULIA is a CAE simulation toolchain built around physics-specific solvers and a workflow layer for preparing boundary conditions, mesh strategy, and solver settings consistently across iterations. Structural work often benefits from tight CAD-to-simulation transfers and reusable setups, while multiphysics tasks support coupled modeling paths through its bundled analysis orchestration. Output review focuses on postprocessing workflows that connect simulation results back to design intent for verification and validation cycles. Integration depth tends to be best when simulation is already part of a PLM-based digital thread rather than a standalone engineering activity.
A tradeoff appears when teams want lightweight, code-free scripting or quick-start standalone use, because SIMULIA’s workflow strength depends on adopting its model management and study orchestration conventions. The best usage situation is running structured parametric sweeps and design of experiments for product validation where reuse of model definitions and repeatable run campaigns reduces manual setup drift.
- +Strong CAD-to-simulation reuse across repeatable product validation iterations
- +Campaign-style parametric studies with consistent study configuration
- +Wide multiphysics coverage for coupled modeling workflows
- +Automation-friendly execution paths for large simulation throughput
- –Setup conventions require training to avoid study configuration drift
- –Workflow depth can be heavy for quick, one-off analyses
- –Automation depends on adopting platform tooling for best results
- –Some solver tuning still demands specialist knowledge
Automotive engineering teams
Validation sweeps for crash and stiffness
Faster iteration on design candidates
Aerospace structures CAE
Multiphysics studies for coupled loads
Better confidence in coupled behavior
Show 2 more scenarios
Industrial product design groups
Boundary-condition studies tied to CAD changes
Lower setup time per run
Reduce manual rework by reapplying simulation definitions as geometry and requirements shift.
Systems simulation engineers
System-level validation with model reuse
More consistent V&V evidence
Use repeatable study management to connect system assumptions to physical results checks.
Best for: Fits when PLM-driven teams need repeatable multiphysics CAE with campaign automation and controlled workflows.
PTC Creo Simulation Live
enterpriseReal-time simulation embedded in Creo CAD.
In-cad, real-time FEA updates tied to Creo model edits, enabling rapid what-if decisions during geometry changes.
Creo Simulation Live runs structural analysis directly against the current Creo model so changes in part or assembly geometry drive updated results without a separate handoff step. It emphasizes fast iterative loops using simplified setup compared with full offline FEA studies, which reduces time spent on repeat configuration. It also supports automation patterns for design reviews because results update in context of the CAD model, which is useful for team walkthroughs and rapid feasibility checks.
The tradeoff is that interactive performance depends on model size and fidelity choices, so high-detail meshing and deep solver tuning often require moving to a dedicated simulation workflow. It fits best for frequent early-stage comparisons like changing thicknesses, adding ribs, or adjusting load paths, where decision speed matters more than exhaustive verification.
- +Updates structural results during Creo editing to shorten design feedback loops
- +Uses CAD-native geometry context to reduce export and re-setup steps
- +Provides interactive simulation templates for common check types
- +Supports iterative design reviews with model and result visible together
- –Interactive solves can become impractical on large assemblies
- –Deep solver controls and advanced study workflows require separate offline setup
Mechanical design engineers
Evaluate stiffness changes during part edits
Faster geometry decisions
Product validation teams
Triage risk before detailed simulation
Reduced rework
Show 1 more scenario
Engineering managers
Review design options in live sessions
Clearer decision alignment
Managers guide tradeoff discussions with results anchored to the same CAD model the team edits.
Best for: Fits when teams need rapid structural validation iterations inside Creo before committing to full offline studies.
EDA Playground
API-firstBrowser-based HDL simulation workspace for Verilog, SystemVerilog, VHDL, and testbench experiments.
Shareable simulation links tied to HDL and SPICE netlists make review and regression discussions faster than local-only setups.
EDA Playground is a web-based digital design simulation environment focused on HDL sharing and instant runs, not a full CAE toolchain. It supports circuit simulation with SPICE netlists and includes a waveform viewer for quick inspection of signals.
- +Browser execution removes local solver and dependency friction
- +Waveform viewer makes signal debugging fast for digital tests
- +SPICE netlist support enables mixed analog and digital experiments
- +Shareable runs help reviewers reproduce HDL test results
- –Limited tooling depth compared with end-to-end CAE workflows
- –Large designs need more disciplined partitioning for practical execution
Best for: Fits when teams need quick HDL and SPICE netlist validation with shareable browser runs for review cycles.
Elmer
vertical specialistOpen-source multiphysics finite element software for fluid, structural, electromagnetic, and thermal problems.
Elmer’s text-based solver configuration lets the same model run across parametric sweeps with deterministic boundary condition and solver setting changes.
Elmer (elmerfem.org) runs finite element simulations that cover coupled physical problems using its Elmer FEM solver stack. Core capabilities include mesh-driven preprocessing, solver configuration for linear and nonlinear cases, and parametric study workflows that reuse the same model and boundary condition structure across runs.
- +Solver configuration exposes convergence tolerance and timestep controls
- +Supports coupled physics workflows through its multi-physics solver approach
- +Parametric runs can reuse the same model structure across studies
- +CAD-to-mesh and mesh refinement control via FEM-focused preprocessing
- –Workflow setup requires deeper configuration discipline than GUI-first tools
- –Advanced study automation needs scripting or external orchestration
- –GUI assistance for troubleshooting convergence gaps is limited
- –Large model throughput can depend on careful meshing strategy and solver tuning
Best for: Fits when teams need repeatable multiphysics validation workflows with explicit solver control and batch studies.
NI Multisim
SMBInteractive SPICE-based circuit simulator for analog, digital, and mixed-signal electronics.
Schematic-linked virtual instruments that collect measurement traces directly during SPICE-style runs.
NI Multisim targets circuit simulation and schematic-driven verification for electronic designs, with a workflow built around SPICE-style netlists and component-level behavior. It supports mixed-signal construction using device models, stimulus sources, and measurement instruments tied to the schematic.
- +Schematic-first workflow that keeps SPICE netlists synchronized with edits
- +Built-in virtual instruments for measurements without exporting data
- +Parametric sweeps and repeat runs support design margin checks
- +Strong connection paths for NI hardware test and control workflows
- –Circuit fidelity depends heavily on availability and quality of device models
- –Automation beyond typical scripting needs extra setup discipline
- –Not suited for multiphysics physical modeling outside electronics
- –Large projects can slow down when models and stimuli become extensive
Best for: Fits when teams validate analog and mixed-signal circuit behavior with NI-linked bench workflows.
Proteus Design Suite
vertical specialistSchematic capture, PCB design, and microcontroller simulation software for embedded electronics.
Virtual instrumentation tied to schematic nodes enables measurement-style debug during SPICE runs.
Proteus Design Suite connects circuit capture, SPICE-based simulation, and mixed-signal debugging in one workflow for hardware teams that need fast iteration on embedded designs. A distinctive strength is testbench automation via compiled stimulus and virtual instrumentation, which supports repeatable runs without rebuilding schematic logic.
- +Tight schematic to waveform debug loop with net-level visibility
- +Automated mixed-signal testbenches that reuse stimuli across runs
- +Reusable virtual instruments for repeatable measurement workflows
- +Broad component library support for embedded circuits and interfaces
- –Less depth for multiphysics workloads than dedicated CAE suites
- –Simulation stability often depends on careful model selection and tuning
- –High-scale parametric sweep throughput can lag compared with script-driven solvers
- –Extensibility for custom co-simulation paths requires disciplined setup
Best for: Fits when mixed-signal embedded teams need rapid schematic-driven simulation and repeatable testbenches.
Cadence Xcelium
enterpriseDigital hardware simulator for RTL verification, mixed-language designs, and regression workflows.
Execution-time configuration controls that reduce variability across regression runs in large mixed workloads.
Cadence Xcelium targets digital design simulation with high throughput for large verification testbenches. It is built around native compilation and accelerated simulation engines for mixed signal workflows, including circuit-level co-simulation scenarios.
- +High-throughput simulator execution for large digital regressions
- +Automation-friendly run controls for repeatable regression orchestration
- +Good fit for mixed workloads that combine digital verification with circuit-level models
- +Workflow governance supports consistent outputs across verification runs
- –Advanced performance tuning requires simulation-engine familiarity
- –Complex mixed workflows can increase setup and dependency on co-simulation integration
- –Toolchain integration choices can narrow portability across heterogeneous environments
Best for: Fits when verification teams need fast, automated digital simulation cycles with controlled execution settings across regressions.
LTspice
SMBFree SPICE simulator for analog circuits, switching regulators, transient analysis, and frequency response.
Direct waveform and measurement automation via LTspice directives tied to netlist runs, reducing manual post-processing.
LTspice performs circuit-level analog and mixed-signal simulation from SPICE netlists, then generates plots and operating-point data for each run. It is distinct for its tightly integrated schematic editor, direct device modeling library workflows, and fast iteration for transient, AC, and noise analyses.
- +Schematic-to-SPICE netlist workflow keeps edits traceable across simulation runs
- +Built-in directives for measurements enable repeatable scripted verification
- +Fast reruns for transient and frequency sweeps support rapid design iteration
- +Model libraries and subcircuit reuse reduce effort for multi-stage circuits
- –Limited support for full multi-physics coupling compared with CAE suites
- –Advanced automation needs careful scripting around netlist generation and parameterization
Best for: Fits when mixed-signal teams need repeatable circuit simulation and measurement automation without system-level CAE workflows.
Verilator
API-firstOpen-source SystemVerilog and Verilog compiler that converts RTL into cycle-accurate executable models.
C++ compilation of RTL into an executable simulation model for speed-focused verification and regression workflows.
Verilator targets digital design simulation by compiling synthesizable Verilog and SystemVerilog into cycle-accurate C++ for fast execution. It is especially distinct for testbench-driven RTL verification workflows that need high throughput and deterministic time stepping.
- +Compiles RTL into C++ for high-throughput simulation runs
- +Cycle-accurate execution makes regression results deterministic
- +Signal tracing supports debug of failing test cases
- +CLI-driven model generation fits CI build pipelines
- –Not ideal for heavy testbench features that expect event-driven semantics
- –SystemVerilog support depends on coding style and constructs used
- –Large designs require careful build and memory planning
- –Debugging often needs waveform tooling outside Verilator itself
Best for: Fits when teams need fast RTL simulation and regression throughput with build-system integration.
Conclusion
After evaluating 10 digital design simulation software, COMSOL Multiphysics stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
How to Choose the Right Digital Design Simulation Software
Digital design simulation software in this guide spans COMSOL Multiphysics and Dassault Systèmes SIMULIA for coupled physical validation, plus PTC Creo Simulation Live for in-CAD structural checks. EDA Playground, Elmer, NI Multisim, Proteus Design Suite, Cadence Xcelium, LTspice, and Verilator cover browser HDL and SPICE runs, configurable multiphysics, circuit testing, mixed-signal workflows, digital regressions, netlist measurement automation, and compiled RTL execution.
COMSOL Multiphysics ranks first for shared geometry and parameters across sequential multiphysics studies. The ranking weighs model coupling, solver control, CAD integration, automation, execution throughput, and workflow depth across different simulation philosophies.
How Digital Design Simulation Software Connects Models, Solvers, and Test Runs
Digital design simulation software converts product geometry, circuit schematics, HDL, or RTL into executable models for structural, thermal, electromagnetic, fluid, analog, mixed-signal, or digital behavior studies. COMSOL Multiphysics uses one model tree to connect shared geometry and parameters across coupled physics studies, while NI Multisim links schematic edits to SPICE netlists and virtual instrument traces.
The category also includes tools built for focused execution rather than broad physical modeling. Cadence Xcelium runs large digital regressions with controlled execution settings, and Verilator compiles RTL into C++ for high-throughput, cycle-accurate simulation.
Evaluation criteria for Digital Design Simulation Software integration and automation
Digital design simulation tools are judged by how reliably a workflow stays connected from model edit to solver run to measurement output. Tools that keep one model tree or one testbench source of truth reduce mismatches that break verification cycles.
The second axis is automation control. The guide focuses on whether runs can be reproduced with disciplined configuration controls, and whether execution supports regression-style throughput without manual reruns or brittle post-processing.
Shared model structure across multiphysics studies
COMSOL Multiphysics connects coupled-physics studies with one parameterized model and geometry in a single model tree. Elmer uses text-based solver configuration so sweeps apply deterministic boundary condition and solver setting changes.
Simulation campaign orchestration with controlled configuration drift
Dassault Systèmes SIMULIA runs campaign-style parametric studies while keeping study configuration consistent for results comparison. Cadence Xcelium adds execution-time configuration controls to reduce variability across large digital regression runs.
CAD or schematic to simulation feedback loops
PTC Creo Simulation Live updates structural results during Creo editing so what-if decisions happen inside the CAD iteration loop. NI Multisim keeps SPICE netlists synchronized with schematic edits and captures measurement traces during SPICE-style runs.
Regression throughput and model compilation for digital execution
Verilator compiles RTL into a C++ simulation model to deliver high-throughput, cycle-accurate regression execution. Cadence Xcelium emphasizes fast automated digital simulation cycles with repeatable run controls.
Browser execution and review-ready artifact sharing
EDA Playground executes in a browser so HDL and SPICE netlist runs avoid local solver and dependency friction for quick review cycles. LTspice adds measurement directives tied to netlist runs so automated verification outputs reduce manual waveform work.
How to choose Digital Design Simulation Software for model fidelity and repeatable runs
The first decision is workflow topology. Choose COMSOL Multiphysics or SIMULIA when coupled physical validation needs a controlled model-to-study structure across repeatable iterations, then choose Cadence Xcelium or Verilator when the primary bottleneck is digital regression throughput.
The second decision is how simulation definitions stay synchronized. Prefer PTC Creo Simulation Live or NI Multisim when schematic or CAD edits must immediately reflect in simulation outputs, then pick EDA Playground or LTspice when the priority is fast shareable execution or measurement automation anchored in netlists.
Map the core iteration loop to the tool’s native source of truth
If coupled-physics studies must reuse shared geometry and parameters across sequential studies, COMSOL Multiphysics keeps one model tree across the workflow. If repeatable product validation needs campaign-style orchestration from setup through results comparison, Dassault Systèmes SIMULIA keeps study configuration consistent across parametric variants.
Decide whether edits drive in-session feedback or batch offline studies
If design exploration requires structural results during CAD editing, PTC Creo Simulation Live ties interactive updates to Creo model edits. If the workflow can tolerate offline solves, Elmer’s deterministic text-based solver configuration supports explicit convergence tolerance and timestep control in batch studies.
Choose the regression execution philosophy based on throughput and determinism needs
For fast RTL regression runs with cycle-accurate execution, Verilator compiles RTL into a C++ executable simulation model. For controlled execution across large mixed digital workloads, Cadence Xcelium uses execution-time configuration controls to keep regression variability lower.
Pick a connectivity pattern for schematic and netlist verification
If schematic edits must stay synchronized with SPICE netlists while measurement traces are captured during runs, NI Multisim keeps netlists and virtual instrument measurements aligned. If netlist-driven measurement automation is the priority without broader CAE coverage, LTspice uses directives tied to netlist runs to make measurement steps repeatable.
Optimize for collaboration and dependency friction in the execution environment
If shareable browser runs are needed for HDL and SPICE validation review cycles, EDA Playground executes in the browser and supports waveform viewing for signal debugging. If mixed-signal schematic nodes must drive measurement-style debug during SPICE runs, Proteus Design Suite ties virtual instrumentation to schematic nodes and supports automated mixed-signal testbenches.
Who should use Digital Design Simulation Software
Teams that validate physical behavior with repeated parametric changes need tools that keep geometry, parameters, and solver configuration aligned across multiphysics studies. Teams that validate digital behavior need tools that handle regression cycles without unstable execution settings.
Browser-based and netlist-anchored workflows fit teams that prioritize quick iteration and review readiness. Mixed-signal teams often need schematic-to-measurement traceability to debug at signal and node granularity.
Product validation teams running coupled physical verification across iterations
COMSOL Multiphysics supports coupled-physics studies with shared geometry and parameters in one model tree, which reduces study mismatch across sequential multiphysics workflows. Dassault Systèmes SIMULIA supports campaign-style parametric studies that keep study configuration consistent for results comparison.
CAD-centric structural design teams validating changes before committing to full studies
PTC Creo Simulation Live updates structural results during Creo editing to shorten design feedback loops without exporting and re-setup steps. Elmer fits teams that still need explicit solver control and convergence tuning when they can run batch configurations.
Analog and mixed-signal engineers who debug with measurement traces tied to schematics
NI Multisim keeps schematic-first edits synchronized with SPICE netlists and collects measurement traces directly during SPICE-style runs. Proteus Design Suite enables measurement-style debug by linking virtual instrumentation to schematic nodes during SPICE runs.
Verification teams executing large digital regression suites with repeatable run controls
Cadence Xcelium targets high-throughput simulator execution for large digital regressions with automation-friendly run controls. Verilator compiles RTL into C++ for deterministic, cycle-accurate execution that supports fast regression throughput.
Teams validating HDL and SPICE test cases with shareable review cycles
EDA Playground executes HDL and SPICE runs in a browser and shares simulation links tied to HDL and SPICE netlists. LTspice supports repeatable circuit verification by using built-in directives for measurement automation directly in the netlist workflow.
Common pitfalls when buying Digital Design Simulation Software
Many failures come from mismatched workflow assumptions, where a tool’s native source of truth does not match how the team edits models. Other failures come from underestimating configuration discipline for coupled studies and advanced automation.
Teams also misjudge where automation lives, such as confusing run orchestration controls with model synchronization. Those mismatches produce inconsistent results across iterations and regressions.
Choosing a coupled-physics tool but not enforcing shared parameter and geometry reuse
COMSOL Multiphysics reduces study mismatch by keeping coupled-physics studies inside one parameterized model and geometry tree. Dassault Systèmes SIMULIA requires training on campaign setup conventions to avoid study configuration drift.
Assuming interactive solves scale to large assemblies without evaluating solve practicality
PTC Creo Simulation Live shortens feedback loops, but interactive solves can become impractical on large assemblies. For larger models, Elmer’s text-based configuration supports deterministic convergence and timestep control in batch runs.
Underestimating how much circuit fidelity depends on device models and tuning discipline
NI Multisim measurement trace results depend on the availability and quality of circuit device models. Proteus Design Suite simulation stability can require careful model selection and tuning for repeatable mixed-signal runs.
Relying on automation without confirming determinism and configuration control for regression runs
Cadence Xcelium supports execution-time configuration controls, but advanced performance tuning requires simulation-engine familiarity to keep regression behavior stable. Verilator compiles RTL into C++ for deterministic cycle-accurate execution, but event-driven semantics expectations may not match all testbenches.
Using browser execution for complex workloads without planning partitioning and workflow boundaries
EDA Playground reduces dependency friction with browser execution, but large designs need more disciplined partitioning for practical execution. Cadence Xcelium targets high-throughput digital regression execution, which typically better matches very large mixed workloads than lightweight browser runs.
How We Selected and Ranked These Tools
We evaluated COMSOL Multiphysics, Dassault Systèmes SIMULIA, PTC Creo Simulation Live, EDA Playground, Elmer, NI Multisim, Proteus Design Suite, Cadence Xcelium, LTspice, and Verilator using 40% feature coverage and 30% automation and ease/value balance. COMSOL Multiphysics ranked first because its coupled-physics workflow keeps shared geometry and parameters inside one model tree across sequential studies, and it also includes granular solver controls for transient stepping and convergence tuning. Dassault Systèmes SIMULIA ranked high because its campaign-style orchestration keeps parametric model variants consistent from setup through execution and results comparison.
EDA Playground and LTspice scored on execution and measurement repeatability, with browser execution and netlist directives supporting faster review loops and scripted verification. Verilator and Cadence Xcelium scored on regression throughput and execution control, with RTL compiled into C++ for deterministic speed and execution-time configuration controls for repeatable regression runs.
Frequently Asked Questions About Digital Design Simulation Software
How does CAD-to-simulation handoff differ between COMSOL Multiphysics and SIMULIA?
Which tool is more suitable for real-time structural checks while editing geometry in the CAD environment?
How should mixed-signal teams decide between NI Multisim and Proteus Design Suite for testbench automation?
What breaks if a digital verification team expects analog SPICE accuracy from Cadence Xcelium?
How does Verilator fit into a regression pipeline compared with Xcelium?
When does Elmer’s text-based solver configuration provide an advantage over GUI-driven workflows?
How do orchestration features differ between SIMULIA and COMSOL when running design-of-experiments style campaigns?
What integration capability matters most when a team needs automated regression runs tied to version control builds?
How does EDA Playground differ from LTspice for sharing and executing verification artifacts?
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
Funding and competing interests
This study was co-funded by several of the vendors assessed in it. No single vendor funded it. Funders could propose the market studied.
They had no role in selecting vendors, setting or weighting criteria, analysing data or drawing conclusions, and they received the same factual-accuracy check as every other vendor assessed.
Market definition, inclusion rules and criteria weights were fixed by an editor before research began and did not change afterwards. Editorial process →
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