--- title: "Closed Source" description: "Official entry points for commercial EDA tools, AI products, and chip design platforms." --- Tools for simulation and debug, synthesis and physical implementation, timing and physical signoff, analog design, and AI products used in these workflows. ## Core EDA - [Cadence Genus / Innovus+ / Tempus](https://www.cadence.com/en_US/home/tools/digital-design-and-signoff/synthesis/genus-synthesis-solution.html) — Genus performs RTL synthesis, Innovus+ connects synthesis, placement, clock-tree synthesis, and routing, and Tempus provides static timing analysis and signoff. [Innovus+](https://www.cadence.com/en_US/home/tools/digital-design-and-signoff/soc-implementation-and-floorplanning/innovus-plus-synthesis-implementation-system.html) [Tempus](https://www.cadence.com/en_US/home/tools/digital-design-and-signoff/silicon-signoff/tempus-timing-signoff-solution.html) - [Cadence Virtuoso Studio / Spectre](https://www.cadence.com/en_US/home/tools/custom-ic-analog-rf-design/virtuoso-studio.html) — Virtuoso supports schematic entry, layout, and design analysis for custom and analog ICs, while Spectre provides transistor-level SPICE, analog, and RF simulation. [Spectre X](https://www.cadence.com/en_US/home/tools/custom-ic-analog-rf-design/circuit-simulation/spectre-x-simulator.html) - [Cadence Xcelium](https://www.cadence.com/en_US/home/tools/system-design-and-verification/simulation-and-testbench-verification/xcelium-simulator.html) — A logic simulator for IP and SoC verification, supporting SystemVerilog, VHDL, SystemC, UVM, mixed-signal, low-power, and X-propagation verification. - [Siemens Calibre](https://www.siemens.com/en-us/products/ic/calibre-design/) — A physical verification and signoff tool family covering design rule checking (DRC), layout versus schematic (LVS), parasitic extraction, and reliability verification. - [Synopsys Fusion Compiler / PrimeTime](https://www.synopsys.com/implementation-and-signoff/physical-implementation/fusion-compiler.html) — Fusion Compiler implements RTL-to-GDSII digital designs, while PrimeTime provides static timing, signal-integrity, and variation-aware timing signoff analysis. [PrimeTime](https://www.synopsys.com/implementation-and-signoff/signoff/primetime.html) - [Synopsys VCS / Verdi](https://www.synopsys.com/verification/simulation/vcs.html) — VCS runs HDL and testbench simulation, while Verdi combines source, waveform, state-machine, and coverage views to debug design and verification issues. [Verdi](https://www.synopsys.com/verification/debug/verdi.html) ## AI EDA Platforms ### EDA Vendors - [Cadence AgentStack / JedAI](https://www.cadence.com/en_US/home/explore/agentic-ai.html) — Coordinates collaboration among domain agents; JedAI supplies the underlying data, models, and platform infrastructure. - [Cadence AuraStack AI Super Agent](https://www.cadence.com/en_US/home/tools/pcb-design-and-analysis/aurastack-ai-super-agent.html) — Extends agent workflows to PCB and advanced packaging design. - [Cadence Cerebrus](https://www.cadence.com/en_US/home/tools/digital-design-and-signoff/soc-implementation-and-floorplanning/cerebrus-intelligent-chip-explorer.html) — Uses machine learning to explore digital implementation parameters and flows to optimize chip PPA. - [Cadence ChipStack AI Super Agent](https://www.cadence.com/en_US/home/tools/system-design-and-verification/chipstack-ai-superagent.html) — Targets digital front-end design and verification, covering specifications, RTL, testbenches, regression testing, and debugging. [Mental Model and Workflows](https://community.cadence.com/cadence_blogs_8/b/corporate-news/posts/the-engineering-workforce-multiplier-how-agentic-ai-is-shaping-silicon-design) - [Cadence InnoStack AI Super Agent](https://www.cadence.com/en_US/home/tools/system-design-and-verification/innostack-ai-superagent.html) — Orchestrates back-end flows, analyzes constraints, and optimizes PPA for digital implementation and signoff. - [Cadence Maestro](https://www.cadence.com/en_US/home/company/newsroom/press-releases/pr/2026/cadence-introduces-maestro-a-domain-specialized-ai-model.html) (2026) — Combines domain-post-trained models, decision models, and agent skills with EDA/SDA solver feedback and RL for chip and system design; initially available to selected early-access customers. - [Cadence ViraStack AI Super Agent](https://www.cadence.com/en_US/home/tools/custom-ic-analog-rf-design/virastack-ai-super-agent.html) — Organizes design exploration, simulation analysis, and verification workflows for custom and analog ICs. - [GPT-Synopsys](https://news.synopsys.com/2026-09-30-OpenAI-and-Synopsys-Announce-GPT-Synopsys-Frontier-Intelligence-to-Revolutionize-Chip-Design) (2026) — OpenAI and Synopsys are developing specialized models for EDA tool use, with planned integration into customer harnesses, Synopsys.ai, and Autopilot. - [Siemens Aprisa AI](https://siemens.com/aprisa-ai) — Integrates PPA design-space exploration and natural-language assistance into RTL-to-GDS implementation, generating tool configurations and flow examples. - [Siemens Calibre Vision AI](https://blogs.sw.siemens.com/calibre/2025/06/25/calibre-vision-ai-a-new-era-of-fast-scalable-chip-level-drc-debug/) — Combines OASIS results with AI spatial-pattern clustering to organize large volumes of DRC violations into actionable debugging findings for teams. - [Siemens Fuse EDA AI](https://news.siemens.com/en-gb/siemens-fuse-eda-ai-agent/) — Connects design tools through multimodal EDA data, RAG, MCP, and Agent Skills, organizing hierarchical planning, dynamic tool discovery, and feedback loops. [Continuous Verification Architecture](https://blogs.sw.siemens.com/cicv/2026/07/29/self-verifying-eda-ai-agents/) - [Siemens Questa One](https://www.siemens.com/en-us/products/ic/questa-one/) — Combines AI-assisted verification with an Agentic Toolkit for verification planning, execution, debugging, and coverage analysis. - [Siemens Solido AI](https://eda.sw.siemens.com/en-US/ic/solido/solido-generative-agentic-ai/) — Applies generative and agentic AI to schematics, simulation, variation-aware verification, library characterization, and layout, with Fuse coordinating workflows across tools. - [Synopsys AgentEngineer / Autopilot](https://news.synopsys.com/2026-09-28-Synopsys-Powers-Autonomous-Engineering-with-a-Broad-Portfolio-of-Long-Horizon-Agents-and-Autopilot-Platform) — A portfolio of agents for long-running engineering tasks across design stages, planned for availability by the end of 2026. [AMD / Microsoft Case Studies](https://news.synopsys.com/2026-07-27-Synopsys-Advances-Agentic-AI-Chip-Design-with-AMD-and-Microsoft) - [Synopsys.ai](https://www.synopsys.com/ai/ai-powered-eda.html) — Includes AI products for design-space, verification, test, and analog design optimization, connecting DSO.ai, VSO.ai, TSO.ai, and ASO.ai. [Copilot](https://news.synopsys.com/2025-09-03-Synopsys-Announces-Expanding-AI-Capabilities-for-its-Leading-EDA-Solutions) - [UniVista Design Agent (UDA)](https://www.univista-isg.com/site/news_detail/402) — Organizes AI workflows around design requirements, RTL, verification, and debugging, with EDA tool integration. ### AI Chip Design Platforms - [Agentrys Studio](https://agentrys.ai/solutions) — Provides multi-agent workflow building, EDA tool connections, iterative evaluation, and team deployment. - [ChipAgents](https://chipagents.ai/) — An agent platform for chip design and verification that also introduces the Build-A-Chip-Bench long-running workflow evaluation initiative. - [Chipmind](https://www.chipmind.ai/) — Uses engineering context and EDA tools to assist SoC design, integration, and debugging. - [ChipNexus NEX](https://docs.chipnexus.ai/) — Formerly Primis AI, a commercial chip design agent framework with command-line, collaboration, and multi-tool orchestration support. - [Cognichip](https://www.cognichip.ai/) — An ACI platform for semiconductor design that integrates generation, modification, verification, and optimization into a unified workflow. - [Moores Lab AI](https://www.mooreslab.ai/) — Provides VerifAgent, DebugAgent, and CoverageAgent for testbench generation, debugging, and coverage improvement loops. - [Silimate](https://www.silimate.com/) — AI agents for RTL front-end design that combine functional debugging with PPA optimization.