OpenSpec

OpenSpec

Fission AI
RIB SpecLink

RIB SpecLink

RIB Software
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About

OpenSpec is an open-source spec-driven development framework designed to bring structure and clarity to AI-assisted coding workflows. It introduces a lightweight specification layer that helps teams define requirements before writing code. The platform organizes each change into structured artifacts such as proposals, specifications, designs, and task lists. It integrates with over 20 AI coding tools, allowing developers to use their preferred assistants while maintaining consistency. OpenSpec emphasizes an iterative and flexible approach rather than rigid development phases. Its command-based workflow enables users to propose, implement, and archive features efficiently. Overall, OpenSpec helps developers align with AI systems, reduce ambiguity, and produce more predictable and reliable outcomes.

About

No other specification software helps you work smarter or faster than SpecLink. Save time. Save money. Get it right. Every phase. Every time. Enhance the specification process at every stage. SpecLink specification software—improves efficiency and accuracy in the building design process. And with SpecLink now in the cloud, you can produce specifications even faster by collaborating across teams. Streamline every phase of your construction project with the industry’s best building specification content. SpecLink is intuitive specification-writing software that helps you make more informed decisions, faster, through every phase of the design process. SpecLink combines the industry’s best content with the most advanced software on the market. Our master guide specification writing, management, and production system with built-in intelligence is designed to help you dramatically speed up editing tasks and reduce specification production time while minimizing errors and omissions.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers, product teams, and organizations using AI coding assistants who want a structured, spec-driven approach to improve clarity, collaboration, and development outcomes

Audience

Engineering, architecture, construction professionals seeking a solution to manage and improve their projects

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Not Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Open source
Free Version Supported
Free Trial Not Supported

Pricing

$1695.00 per year
Free Version Supported
Free Trial Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

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Reviews/Ratings

Overall 3.0 / 5
ease 3.0 / 5
features 3.0 / 5
design 3.0 / 5
support 3.0 / 5

Pros & Cons from Real Users

Pros

  • The time savings alone makes it worth it. It's so easy to use and the output is consistent for every project.
  • No pros at all. I could redline it faster than this software

Cons

  • Nothing that I can think of, but more of a feature request. I wish the Revit integration would drive keynotes back into the model. I understand why it's not setup this way, but it would be great consider this for any future updates.
  • Doesn't Spell Check even the word Architect Formatting is so basic I have to clean up afterword to make it look decent Have to wait forever for it to update before exporting Just plain inferior to MasterSpec

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Supported
Live Online Supported
In Person Supported

Company Information

Fission AI
openspec.dev/

Company Information

RIB Software
Founded: 1961
Germany
bsdspeclink.com

Alternatives

Claude Code

Claude Code

Anthropic

Alternatives

GSD Pi

GSD Pi

Open GSD
Kiro

Kiro

Amazon Web Services
Zenflow

Zenflow

Zencoder
OpenSpec

OpenSpec

Fission AI
Intent

Intent

Augment Code

Categories

Agentic AI Supported
AI Coding Agents Supported

Categories

Architecture Features

2D Drawing Not Supported
3D Modeling Not Supported
Bills of material Not Supported
BIM Modeling Not Supported
Building Information Modeling Not Supported
Client Management Not Supported
Contact Management Not Supported
Contract Management Not Supported
Document Management Supported
Drafting Not Supported
Manufacturing Design Data Not Supported
Presentation Tools Not Supported
Project Management Not Supported
Proposal Management Not Supported
Quotes/Proposals Not Supported
Visualization / Presentation Not Supported

Construction Estimating Features

Accounting Integration Supported
Audit Trail Supported
Bid Management Not Supported
Billing & Invoicing Not Supported
Building Product Database Supported
Calculators Supported
Change Orders Not Supported
Contract Management Not Supported
Cost Database Supported
Customer Management Not Supported
Customizable Templates Supported
Electrical Estimating Supported
Historical Database Supported
HVAC Estimating Supported
Job Costing Supported
Plumbing Estimating Supported
Price Data / Price Books Supported
Project Management Not Supported
Quote Management Supported
Reporting/Analytics Supported
Scheduling Not Supported
Subcontractor Management Not Supported
Takeoff Not Supported
What-if Analysis Not Supported

Integrations

Amazon Q Developer Supported
Auggie CLI Supported
Claude Code Supported
Cline Supported
CoStrict Supported
Codebuddy Supported
Crush Supported
Cursor Supported
Devin Desktop Supported
Factory Supported
Gemini CLI Supported
GitHub Copilot Supported
Google Antigravity Supported
Kilo Code Supported
OpenAI Codex Supported
OpenCode Supported
Qoder Supported
Qwen Code Supported
Roo Code Supported

Integrations

Amazon Q Developer Not Supported
Auggie CLI Not Supported
Claude Code Not Supported
Cline Not Supported
CoStrict Not Supported
Codebuddy Not Supported
Crush Not Supported
Cursor Not Supported
Devin Desktop Not Supported
Factory Not Supported
Gemini CLI Not Supported
GitHub Copilot Not Supported
Google Antigravity Not Supported
Kilo Code Not Supported
OpenAI Codex Not Supported
OpenCode Not Supported
Qoder Not Supported
Qwen Code Not Supported
Roo Code Not Supported
Claim OpenSpec and update features and information
Claim OpenSpec and update features and information
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Claim RIB SpecLink and update features and information