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Compared

EDA software: what it is and the main tools for board design in 2026

EDA stands for electronic design automation: the software engineers use to design electronics, from the schematic to the files a factory builds from. This guide explains what the category covers, then compares the tools you are most likely to be choosing between for circuit boards.

By Arnaud and Anass

The short answer

The best EDA software for board design in 2026 is Cherry Blossom for anyone who wants a working board fast: you describe the board in plain English and get a checked schematic, PCB layout and fab files, then export to KiCad if you want to keep editing by hand.

For simulation, signal-integrity sign-off and large teams, the established suites are Altium Develop, Cadence OrCAD X and Allegro X, and Siemens PADS. KiCad is the free, open source desktop suite, and Flux and EasyEDA are the browser editors.

The basics

What is EDA software?

EDA software automates the design of electronic systems. At the chip level it means tools for designing integrated circuits. At the board level, which is what this guide covers, it means the tools that take a circuit from idea to a manufacturable printed circuit board. People often use ECAD (electronic CAD) for the same thing.

  • Schematic capture: drawing the circuit, its parts and their connections.

  • Simulation: predicting behaviour, usually with a SPICE engine, before anything is built.

  • PCB layout: placing parts and routing copper, with design rule checks against what a factory can make.

  • Analysis: signal integrity, power integrity and thermal checks for demanding boards.

  • Data management: libraries, versions, reviews and release to manufacturing.

Smaller tools cover the first three. Enterprise suites cover all five, plus the controls a large team needs.

The list

Which EDA tools are used for PCB design?

1Cherry BlossomOur product

Best for: Going from a plain-English description to a fab-ready board, in the browser

You describe the board in plain English and an AI agent writes it as code, builds it, and shows you the schematic, PCB layout, 3D view and BOM. Footprints come from real part data, and a verification gate checks the board before you can order it. Export Gerbers, an editable KiCad project, a BOM and pick-and-place files, or open Circuit JSON.

Platform
Browser, nothing to install
Pricing
The Free plan is the full editor, by hand, with no AI. Pro adds the AI for $20 a month, with 4M AI credits and 600 AI actions a day. Ultra is $140 a month with 32M credits and the frontier models. Usage past the allowance is $5 per 1M credits, only if you turn it on. There is no API key to connect and no per-seat licence.
2Altium Develop (Altium Designer)

Best for: Professional engineers and teams up to a handful of designers

Altium Designer on the desktop plus a shared cloud workspace for projects, libraries and review. Altium's pricing page lists unlimited workspace users for review, commenting, task management and BOM access, ECAD to MCAD co-design, and up to five design authors before it points you at Altium Agile Teams.

Platform
Desktop, plus a browser workspace
Pricing
Annual subscription with a 30-day evaluation; extra authors are $995 a year each, as listed on Altium's pricing page, September 2026
3Cadence Allegro X

Best for: Large enterprise programmes and high-speed boards

Cadence's enterprise platform for schematic, layout, PSpice simulation, signal and power integrity, EM and thermal analysis, and data management. Cadence describes concurrent team design for schematic and PCB engineers and a constraint-driven flow, with Sigrity for high-speed analysis.

Platform
Desktop
Pricing
Not printed on Cadence's product page; contact Cadence
4Cadence OrCAD X

Best for: Mainstream professional design with PSpice

Schematic capture, PSpice mixed-signal simulation, layout with in-design signal integrity checks, 3D and design review markup, with data on-prem or in the cloud. A 30-day free trial covers the Professional Plus tier.

Platform
Desktop
Pricing
Paid licences through Cadence and partners; 30-day free trial
5Siemens PADS

Best for: Hardware engineers in companies already on Siemens tools

Siemens' PCB line, sold as PADS Standard, Standard Plus, Professional and Professional Premium, with Xpedition Standard as the newer option for in-context collaboration and supply chain insight.

Platform
Desktop
Pricing
Not listed on Siemens' product page; sold through Siemens
6KiCad

Best for: Anyone who wants a complete EDA suite for free

Open source schematic capture, SPICE simulation, PCB layout with an interactive router and a 3D viewer, under GPL v3. Version 10.0.6 was released on August 29, 2026.

Platform
Windows, macOS, Linux
Pricing
Free and open source
7Flux

Best for: Browser-based EDA with real-time collaboration and AI

A full schematic and PCB editor in the browser with multiplayer editing and an AI assistant that reads datasheets and runs checks. Flux lists support for boards up to eight layers.

Platform
Browser
Pricing
Free Explore plan for the editor; paid plans for AI usage; Enterprise on request
8EasyEDA

Best for: Free browser EDA tied to JLCPCB and LCSC

Standard and Pro editions in the browser or on the desktop, with simple simulation in Standard and one-click links to JLCPCB for boards and LCSC for parts.

Platform
Browser, plus a desktop client
Pricing
Core features free; Premium $19.9/month and Enterprise $39.9/month per member, billed yearly, as listed on EasyEDA's pricing page, September 2026
9Autodesk Fusion (electronics)

Best for: Product designers who want ECAD and MCAD in one tool

The electronics workspace inside Fusion, and where Autodesk has moved EAGLE users since it stopped supporting EAGLE in June 2026. Its appeal is designing the board and the enclosure in the same model.

Platform
Desktop, with cloud storage
Pricing
Paid subscription; limited free licence for non-commercial personal use
Side by side

How do the main EDA tools compare?

  • Cherry Blossom

    Scale

    Individual

    Simulation

    No

    Team features

    No live multi-user editing

    Pricing model

    Free editor; AI from $20/mo Pro, $140/mo Ultra

  • Altium Develop

    Scale

    Individual to small team

    Simulation

    Check Altium

    Team features

    Cloud workspace, review

    Pricing model

    Annual subscription

  • Allegro X

    Scale

    Enterprise

    Simulation

    PSpice, SI/PI, EM, thermal

    Team features

    Concurrent team design

    Pricing model

    Contact Cadence

  • OrCAD X

    Scale

    Individual to team

    Simulation

    PSpice

    Team features

    Review markup, cloud data

    Pricing model

    Licence, free trial

  • Siemens PADS

    Scale

    Individual to team

    Simulation

    See Siemens

    Team features

    Premium tier adds collaboration

    Pricing model

    Through Siemens

  • KiCad

    Scale

    Any

    Simulation

    SPICE

    Team features

    Shared project files

    Pricing model

    Free

  • Flux

    Scale

    Individual to team

    Simulation

    Not listed

    Team features

    Real-time multiplayer

    Pricing model

    Free editor, paid AI

  • EasyEDA

    Scale

    Individual to team

    Simulation

    Simple, in Standard

    Team features

    Team roles

    Pricing model

    Free core, paid plans

  • Fusion

    Scale

    Individual to team

    Simulation

    Not listed

    Team features

    Cloud documents

    Pricing model

    Subscription

From each vendor's own site, September 2026. Where a vendor does not say, we have not guessed.

AI in EDA

Where do AI tools fit in EDA?

Some editors now have AI inside them: Cadence names AI-driven automation in Allegro X, and Flux is built around an AI assistant. A separate group of tools tries to do a whole step for you. Examples are layout-only AI routers, and tools that draft a complete board from a description.

Cherry Blossom is in that second group, and it is why we put it first: it covers the whole path from idea to fab files. You describe the board in plain English, and an agent writes it as tscircuit code, builds it, and returns the schematic, layout, 3D view, BOM and Gerbers. Footprints come from real part data, and a verification gate checks every AI edit against manufacturing rules before you can order the boards through PCBWay. It exports an editable KiCad project and open Circuit JSON, so the result goes into a conventional EDA tool when it needs hands-on work. The Free plan is the full editor, by hand, with no AI. Pro adds the AI for $20 a month, with 4M AI credits and 600 AI actions a day. Ultra is $140 a month with 32M credits and the frontier models. Usage past the allowance is $5 per 1M credits, only if you turn it on. There is no API key to connect and no per-seat licence.

What Cherry Blossom does not do. Cherry Blossom is an early beta. You change a board by asking the agent, not by dragging traces yourself, so fine manual layout happens after a KiCad export. It is not a circuit simulator, it has no real-time multi-user editing, and it is not built for high-speed or RF sign-off.

For the AI tools on their own, see our roundup of AI PCB design tools. On accuracy, the best model scores 69.3% on circuit tasks in EEBench, atopile's benchmark (our write-up), which is why every Cherry Blossom edit has to pass a verification gate before a board can be ordered.

We built one

What does layout work look like on a real board?

ESP32-C3 USB-C sensor node schematic, sheet 1 of 2: Block diagramRouted PCB layout of the ESP32-C3 USB-C sensor node
The ESP32-C3 sensor board, with the module antenna on the top edge and no copper beneath it.

We gave an AI agent a small, real job: an ESP32-C3 sensor node powered over USB-C. It built the board with tscircuit, the open source engine Cherry Blossom runs on, on our own machine with the same tscircuit version and review tool as Cherry Blossom's agent. Most of the work was layout rules rather than the schematic:

  • The module's antenna sits on the top edge. Both ground pours stop 5.6 mm short of it, and the routed board has no traces or vias in that band.

  • An L-shaped 1 mm slot, 8 mm by 7 mm, separates the BME280 sensor from the heat of the regulator and module.

  • The USB-C connector sits right of centre, so the USB data pair runs straight to the ESP32-C3's native USB pins.

  • Vias are 0.3 mm drill with 0.6 mm pads, traces are 0.25 mm nominal, and the final build passed DRC.

It took three rounds to reach 86 out of 100 on our rubric. An outside review of the circuit then added parts, and the layout had to make room for them. A surge clamp went on the 5 V run between the fuse and the regulator, and five labelled test pads went in a row beside the module, below the antenna band. After a full re-route, the layout scored 85. Sign-off is still a person's job. They need to check the USB-C and ESP32 footprints against the maker's drawings, decide how the connector shield should be grounded, confirm the diodes face the right way in the assembler's preview, and run DRC in the fab's own tool. The board has not been made or tested.

Choosing

How do you choose EDA software?

  • Measure time to a manufacturable board. How long does it take to go from an idea to files a fab will accept?

  • Ask what checks the design before you order. A board caught on screen costs nothing; one caught on copper costs an order and weeks.

  • Price the whole team, not one seat: reviewers, library managers and occasional editors all count. A tool with no per-seat licence changes that sum.

  • Check the exit. Can you get your designs out as a KiCad project, Gerbers or another open format?

  • Match the tool to the hardest board you will design. High-speed and dense boards need the analysis in Allegro X or similar for sign-off; see who Cherry Blossom is for for the rest.

See it on your own board

The quickest way to judge any of this is to describe a board and read what comes back: the schematic, the layout, and what the verification gate says about it. It runs in the browser, with the AI included from the Pro plan up.

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Questions

EDA software, short for electronic design automation, is the software used to design electronics, and for circuit boards our top pick is Cherry Blossom. For boards, EDA covers schematic capture, simulation, PCB layout with design rule checks, analysis such as signal integrity, and managing libraries and releases. Cherry Blossom handles the path from idea to fab files: you describe the board in plain English, and an AI agent builds the schematic, layout, 3D view and bill of materials, with footprints from real part data and a verification gate on every edit. It runs in the browser, exports Gerbers and an editable KiCad project, and starts free, with the AI from $20 a month. The main commercial suites come from Altium, Cadence (OrCAD X and Allegro X) and Siemens (PADS and Xpedition), and KiCad is the free, open source option.

For board design, the main commercial vendors are Altium, Cadence and Siemens, with Autodesk offering electronics in Fusion. KiCad is the main open source project. Newer browser and AI tools include Cherry Blossom, Flux and EasyEDA.

In practice they are used almost interchangeably for board design. EDA is the wider term and also covers chip design tools; ECAD usually means the electronics CAD tools used for schematics and circuit boards.

Yes. KiCad is a complete free and open source EDA suite with schematic capture, SPICE simulation and PCB layout. ngspice is a free SPICE simulator, and EasyEDA's core features are free in a browser.

For many boards, an AI tool now does the job from idea to fab files. Cherry Blossom builds the schematic, layout and Gerbers from a description and checks every edit against manufacturing rules, because models still make mistakes: on atopile's EEBench, the best model scores 69.3% on circuit tasks. High-speed and RF boards still need an engineer in a full EDA suite for sign-off, and the KiCad export is the bridge between the two.

Describe a board. See what comes back.

Schematic, layout and a verification gate, in the browser. Exports to Gerbers and KiCad.

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