Product / UX / UI & API

NextChat

Lightweight, cross-platform ChatGPT/Gemini/Claude web client that runs as a single Next.js app deployable to Vercel in one click. Picked for its minimalism and easy personal deployment when full-fat frontends like Open WebUI are overkill; ~88k GitHub stars makes it the single most-starred OSS chat UI repo by raw count.

v2.16.1 latest release (~mid-2025; release notes cite OpenAI o3/o4-mini + Claude 3.7 support); MIT core. ~6-12mo since last release as of June 2026 -> freshness flag. Cross-platform (web/desktop/mobile) chat client; Enterprise Edition adds permissions/RAG.

Openness

4 high confidence

4.0

license: MIT(core, public source)
enterprise-tier: NextChat Enterprise (permission controls, team resource mgmt, internal knowledge base/RAG)

OSI MIT core with a separate proprietary Enterprise Edition for multi-user permissions and internal-KB RAG -> open_core (calibrated to the LiteLLM open_core anchor).

https://github.com/ChatGPTNextWeb/NextChat recorded 2026-06-04
MIT license; cross-platform chat client; Enterprise Edition (permissions, team mgmt, internal knowledge base)

Adoption

3 low confidence

3.0

88.2k GitHub stars and one-click Vercel deploy indicate broad lightweight use, but no verified download/MAU figure from a primary source this run, and last release ~6-12mo ago. Capped at 3 on stars fallback; momentum appears to have slowed.

https://github.com/ChatGPTNextWeb/NextChat recorded 2026-06-04
88.2k stars; v2.16.1 latest release; cross-platform deployment

Capability

3 medium confidence

3.0

Solid lightweight cross-platform client with plugins/MCP/vision, but RAG and multi-user are gated to Enterprise; thinner OSS feature surface than Open WebUI/LibreChat/AnythingLLM.

https://github.com/ChatGPTNextWeb/NextChat recorded 2026-06-04
multi-provider, plugins, vision, MCP, artifacts; RAG/multi-user in Enterprise Edition

Unchanged since 2026-06-09 (last edited, not re-checked)