OpenSpec

OpenSpec

Fission AI
Incbury OpenSpec

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Incbury:

About

Incbury is an independent UK AI company that develops its own small language models, known as Atom. Incbury Chat is an AI assistant for conversation, writing, research, and analysis, with web search, projects, and file handling. Incbury Code is a coding agent for desktop and terminal workflows, with sidebars for VS Code and Cursor; it can inspect codebases, propose file changes for approval, and run commands and tests. The Incbury API gives developers OpenAI-compatible access to Atom for adding language-model features to applications, including streaming and function calling. Chat offers a free plan with daily fair-use limits; API and Code use prepaid credits. Incbury publishes benchmark results and examples of model limitations. Its products serve individuals, developers, startups, and teams seeking chat, coding assistance, or AI-powered applications.
OpenSpec:

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.
Incbury:

Platforms Supported

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

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
Incbury:

Audience

Developers, startups and individuals who want an AI chat assistant, coding agent or OpenAI-compatible API
OpenSpec:

Audience

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

Support

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

Support

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

API

Offers API Supported
OpenSpec:

API

Offers API Not Supported
Incbury:

Screenshots and Videos

OpenSpec:

Screenshots and Videos

Incbury:

Pricing

£0
Free plan at £0 forever with daily fair-use limits. Pro is £14.99/month and Ultra is £79.99/month, both excluding VAT. Business is £24.99/user/month excl. VAT, with a 2-user minimum. API and Code use prepaid credits; API input is £0.20 per million tokens, cached input £0.05 per million, and output £0.80 per million. Applicable taxes are added at checkout.
Free Version Supported
Free Trial Not Supported
OpenSpec:

Pricing

Free
Open source
Free Version Supported
Free Trial Not Supported
Incbury:

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:

Review this Software
OpenSpec:

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:

Review this Software
Incbury:

Training

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

Training

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

Company Information

Incbury
Founded: 2025
United Kingdom
incbury.co.uk
OpenSpec:

Company Information

Fission AI
openspec.dev/
Incbury:

Alternatives

AtomCode

AtomCode

AtomGit
OpenSpec:

Alternatives

Claude Code

Claude Code

Anthropic
5.0 out of 5 stars
Incbury:
OpenSpec:
GSD Pi

GSD Pi

Open GSD
Incbury:
Deep Code

Deep Code

Chongqing Parsec Technology Co., Ltd.
OpenSpec:
Kiro

Kiro

Amazon Web Services
5.0 out of 5 stars
Incbury:
SinoGate

SinoGate

SHANXUAN TECHNOLOGY LIMITED
OpenSpec:
Zenflow

Zenflow

Zencoder
Incbury:
Cline

Cline

Cline AI Coding Agent
5.0 out of 5 stars
OpenSpec:
Intent

Intent

Augment Code
Incbury:

Categories

AI Chatbots Supported
AI Coding Agents Supported
OpenSpec:

Categories

Agentic AI Supported
AI Coding Agents Supported
Incbury:

Integrations

Cursor Supported
Amazon Q Developer Not Supported
ArchGenerator Not Supported
Claude Code Not Supported
Cline Not Supported
CoStrict Not Supported
Codebuddy Not Supported
Crush Not Supported
Devin Desktop Not Supported
Gemini CLI Not Supported
GitHub Copilot Not Supported
Google Antigravity Not Supported
Kilo Code Not Supported
Model Context Protocol (MCP) Supported
OpenAI Codex Not Supported
OpenCode Not Supported
Qoder Not Supported
Qwen Code Not Supported
Roo Code Not Supported
Visual Studio Code Supported
OpenSpec:

Integrations

Cursor Supported
Amazon Q Developer Supported
ArchGenerator Supported
Claude Code Supported
Cline Supported
CoStrict Supported
Codebuddy Supported
Crush Supported
Devin Desktop Supported
Gemini CLI Supported
GitHub Copilot Supported
Google Antigravity Supported
Kilo Code Supported
Model Context Protocol (MCP) Not Supported
OpenAI Codex Supported
OpenCode Supported
Qoder Supported
Qwen Code Supported
Roo Code Supported
Visual Studio Code Not Supported
Incbury:
Claim Incbury and update features and information
Claim Incbury and update features and information
OpenSpec:
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Claim OpenSpec and update features and information