Stillwind
Natural language electronic component search and BOM copilot for engineers
Stillwind deserves a slot in any hardware engineer's toolkit—its natural language search genuinely slashes part-discovery time, and the Builder beta shows real promise for early design validation. But the absence of live pricing, stock data, and CAD integrations limits it to concept work, not procurement. It's free, so test it on your next vague component hunt. You'll likely save minutes. For procurement, you'll still need distributor tools like Digi-Key or Mouser for real-time stock and pricing.
Verified 22h ago · liveness 66/100 · cite: rightaichoice.com/tools/stillwind
- Electrical engineers sourcing components from vague functional descriptions
- Hobbyists building custom electronics needing fast part discovery
- Procurement teams seeking alternative or compatible parts across suppliers
- PCB designers needing high-resolution component data for dense layouts
- General web search needs (only searches electronics components)
- Mechanical or civil engineering (domain-specific to electronics)
- Users needing real-time pricing or stock availability (provides links only)
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Skip Stillwind if you need real-time pricing, stock availability, or CAD/EDA tool integration—it focuses on part discovery and BOM ideation, not procurement or design tooling.
The AI Librarian service is custom-priced, so you'll need to contact sales for a quote—no transparent per-footprint pricing is published.
Stillwind's free tier is a great fit for individual engineers and hobbyists who want fast part discovery without cost. The AI Librarian service is custom-priced for teams with footprint library needs—compare that to dedicated library services or the time cost of manual fixes. For teams needing full procurement workflows, distributor tools like Digi-Key or Mouser offer more comprehensive pricing data, though they lack the natural language search.
In short
Stillwind — Natural language electronic component search and BOM copilot for engineers. Best for Electrical engineers sourcing components from vague functional descriptions, Hobbyists building custom electronics needing fast part discovery, Procurement teams seeking alternative or compatible parts across suppliers. Free to use.
What's new in Stillwind
Checked todayAcross the latest 2 updates: 1 feature update and 1 launch.
Stillwind Builder - From Idea to BOM in the order of minutes
Stillwind Builder launched as a design copilot that generates validated BOMs from natural language prompts in minutes.
Stillwind Search - High resolution component search for PCBs
Introduced high-resolution component search for PCBs, improving recall on dense board designs.
What people actually say about Stillwind — is it worth it?
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
32 mentions across 3 sources (Hacker News, YouTube, Bluesky) · researched Jul 28, 2026.
- +Natural language search accepts complex spec constraints like voltage range and interface count.
- +Hybrid search combines semantic and parametric queries for more relevant part matches.
- +Indexes over 75 million parts from multiple suppliers in one place.
- +Stillwind Builder auto-generates BOM from a natural language project description.
- +Free to use with no credit card required.
- −No independent user reviews exist to verify real-world accuracy or reliability.
- −Lacks pricing and stock data, making it incomplete for procurement decisions.
- −Builder feature is beta and outputs may need manual correction.
- −No CAD or BOM tool integrations (Altium, KiCad, etc.) break workflow.
- −Community adoption seems extremely low after a year of availability.
- • No hidden costs identified — the tool is genuinely free at this stage.
Viability Score
How well maintained and how widely used is Stillwind? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: September 2026
How we score →Key Features
- Natural language component search
- Hybrid semantic + parametric querying
- 75M+ indexed parts
- Millions of structured parameters
- Thousands of parsed datasheets with page-level references
- Stillwind Builder: compose boards from natural language prompts (beta)
- Formalizes system constraints into mathematical specs
- Cross-references candidates to resolve incompatibilities
- Semantically-validated Bill of Materials (BOM)
- High-resolution component search for PCBs (June 2026)
- Footprint-matching alternative part suggestions
- Search multiple suppliers and datasheets in one query
- Pre-built example queries (MCU, buck converter, SAW filter)
- Web application with clean interface
- AI Librarian service for footprint library fixes (paid)
About Stillwind
Stillwind is a free AI-powered copilot for electrical design, built for engineers, hobbyists, and procurement teams who are tired of wrestling with distributor parametric tables. Instead of stacking filters, you describe what you need in plain English—'MCU with JPEG encoder, CSI camera interface, >= 8 PWM channels'—and Stillwind's hybrid search resolves it against a proprietary database of over 75 million parts, millions of structured parameters, and thousands of parsed datasheets with page-level references. That means you get exact matches and source-backed specs you can validate, not just a list of guesses. The search blends semantic and parametric queries in a single natural language input, so you can specify both electrical behavior and physical constraints, like package or saturation current. Each result links back to the datasheet page that supports the spec, which makes verification quick. The tool also supports footprint-matching alternative suggestions, so finding a drop-in replacement across suppliers is faster than manual cross-referencing. A June 2026 update introduced high-resolution component search for PCBs, improving recall on dense board designs where fine-grained layout data matters. Beyond search, Stillwind Builder (beta, announced June 2026) acts as a design copilot: you prompt it with an idea—say, a BLE air-quality sensor board with charging—and it drafts a system spec, formalizes the constraints into mathematical form, and matches them to real parts using the search engine. It cross-references candidates to resolve incompatibilities in real time and serves a semantically-validated Bill of Materials (BOM). That turns an abstract concept into a working parts list in minutes, not days. Stillwind is web-based and free to use, with pre-built example queries—MCU, buck converter, SAW filter, and more—to get you started instantly. It's positioned as a ground-truth platform for component data, distinct from distributor search tools that lock you into a single supplier's catalog.
Behind the Verdict
Stillwind’s core strength is its natural language search over a proprietary component database. Unlike distributor parametric filters, you can type a functional requirement and get parts that match both electrical and physical constraints, with datasheet page-level references for verification. This is a genuine time-saver for early-stage design exploration. The Builder beta extends the value proposition: instead of just finding parts, you can describe a whole system and get a validated BOM. The fact that it formalizes constraints mathematically and cross-references candidates for compatibility suggests real engineering depth, not just a keyword matcher. Where Stillwind falls short is in the procurement end of the workflow. There’s no real-time pricing or stock availability, and no API or CAD integrations, so you can’t plug it into your existing design or procurement stack. That limits it to concept design and parts research, not production purchasing. For hobbyists and engineers early in a project, Stillwind is a free, low-risk tool that can cut hours of datasheet hunting. For procurement teams needing live supplier data, it’s a supplement, not a replacement. The AI Librarian service, though custom-priced, addresses a real pain point: broken footprints that fail production runs, offering 30-minute turnaround and dual-AI verification. Overall, Stillwind is best used as a research and ideation companion. If you need to validate a concept quickly or find a drop-in alternative, it’s excellent. If you need to close a purchase order, you’ll still need distributor tools.
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Real-world workflow fit
Concrete scenarios for the personas Stillwind actually fits — and what changes day-one when you adopt it.
You need an MCU with specific peripherals.
Outcome: Type a natural language query like 'MCU with JPEG encoder, CSI camera interface, >= 8 PWM channels' and get a ranked list of parts with datasheet page references for verification within seconds.
You're designing a custom PCB and need to find a suitable buck converter.
Outcome: Describe the requirement—'buck converter, 12V to 3.3V, 3A, integrated FETs'—and Stillwind returns compatible parts with link to datasheets, saving you hours of parametric filter clicking.
You need a drop-in alternative to a part that's out of stock.
Outcome: Search the original part number or description, review footprint-matching alternatives, and shortlist candidates with full specs for your team to validate.
Use Cases
- Find a microcontroller with JPEG encoder, CSI interface, and 8+ PWM channels
- Locate a buck converter that converts 12V to 3.3V at 3A with integrated FETs
- Discover SMD SAW filters for the 2.4 GHz ISM band
- Search for shielded power inductors with 4.7µH and 5A saturation current
- Identify an integrated heartbeat sensor chip for wearable designs
- Generate a BOM for a battery-powered GPS asset tracker from a prompt
- Design a BLE air-quality sensor board with charging using Builder beta
Limitations
- Stillwind provides AI-powered electronic component search and a BOM copilot (Stillwind Builder) for electrical engineers, capable of generating BOMs from ideas in minutes.
- The AI Librarian service fixes component libraries by delivering spec-compliant footprints within 30 minutes, with manual review when AI systems disagree.
- The site also offers high-resolution component search for PCBs.
- Specific limitations such as API access or pricing are not explicitly documented on the site.
as of 2026-09-01
Verification history
We have re-verified Stillwind 8 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-checked, vendor evidence unchanged
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
Showing the 6 most recent of 8 verification passes.
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Stillwind tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0/mo
Ideal for
Individual engineers, hobbyists, and early-stage projects that need fast part discovery and BOM ideation without recurring cost.
What this tier adds
Starting tier with full natural language search, hybrid querying, datasheet references, and Builder beta access at no charge.
AI Librarian (paid service)
Custom
Ideal for
Hardware teams with legacy or poor-quality footprint libraries who need spec-compliant footprints delivered quickly and at scale.
What this tier adds
Adds a professional service tier with 30-minute turnaround, dual-AI verification, and house-style adaptation, priced per project.
Where the pricing makes sense
The company stage and team size where Stillwind's pricing actually pencils out — and where peers do it cheaper.
Stillwind's free tier is a great fit for individual engineers and hobbyists who want fast part discovery without cost. The AI Librarian service is custom-priced for teams with footprint library needs—compare that to dedicated library services or the time cost of manual fixes. For teams needing full procurement workflows, distributor tools like Digi-Key or Mouser offer more comprehensive pricing data, though they lack the natural language search.
Setup time & first value
How long it actually takes to get something useful out of Stillwind — broken out by persona, not the marketing-page minute.
For most users, you can start searching immediately after visiting the site—no account required. If you want to use Stillwind Builder, you can try a pre-built example query right away. There's no setup or installation required; it's entirely web-based.
Switching to or from Stillwind
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From distributor parametric search (Digi-Key, Mouser): Start by describing your part requirements in natural language instead of using filters, and cross-reference Stillwind's datasheet links to verify specs before
- ↗To distributor sites (Digi-Key, Mouser) for purchasing: Once you've found candidate parts on Stillwind, click through to the manufacturer datasheet or search the part number directly on a distributor site for pricing
Resources & Guides
Tutorials & Learning
Official links
Tools that pair well with Stillwind
Common stack mates teams adopt alongside Stillwind, with the specific reason each pairing earns its keep.
Featured Head-to-Head Comparisons
Stillwind vs Spider Cloud
These tools serve completely different purposes. Choose Stillwind if you need to find electronic components using natural language queries – it's free and purpose-built for engineers. Choose Spider Cloud if you need a high-performance web crawling and scraping API for AI agents, RAG pipelines, or LLMs – it's cost-effective with advanced features like AI extraction and unblocker.
Stillwind vs Screenplayiq
ScreenplayIQ and Stillwind serve completely different domains—one for film industry financial predictions, one for electronic component discovery. Let your profession decide: if you're a screenwriter or producer needing marketability analysis, ScreenplayIQ is the only relevant choice (though paid tiers may be costly). If you're an engineer sourcing parts, Stillwind is free and excels with its high-resolution PCB search launched June 2026. There's no direct competition, so pick based on your field.
Stillwind vs Temporal Ai
Both tools shine in completely separate domains. Temporal AI is the go-to for teams needing bulletproof workflow orchestration with automatic retries and human-in-the-loop, but it's overkill for simple tasks. Stillwind is a niche free tool that excels at finding electronic components from vague descriptions, though it lacks integrations and enterprise support. Choose based on your problem: reliability vs. component discovery.
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