Sombra

Sombra is a platform designed to help individuals and teams organize, distill, and manage knowledge by saving web pages and notes, then transforming them into shared, reusable context. It integrates human input with AI capabilities, allowing both users and AI assistants to access, synthesize, and track information collaboratively. The tool addresses the challenge of managing research, project documentation, and technical references across multiple sources and sessions.

Users can capture web pages and notes into Sombra, where each entry is converted into clean, searchable markdown with images preserved. Collections allow grouping of research by project, topic, or workflow, and can be browsed, searched, and rearranged both by users and connected AI agents. Sombra provides features for distilling collections into focused project context, with code examples preserved and extraneous information removed, enabling one concise summary to replace extensive original material. The platform also supports living documentation, project trackers with structured phases and decision logs, and technical reference builders for deep research on APIs, libraries, and frameworks.

AI integration is central to Sombra, with support for connecting AI agents via the Model Context Protocol (MCP). This allows agents such as Claude, ChatGPT, Cursor, and any MCP client to access, create, and manipulate collections, distill context, and maintain continuity across conversations. Sombra also offers a Chrome extension for capturing pages behind login walls, and can be accessed through a web app or via AI agents. Every document in Sombra maintains a full version history, allowing users and AI to review changes over time, track decision evolution, and maintain session continuity. Early preview features include citation anchoring with drift detection, which highlights when the underlying source text has changed.

The platform is described as being built for developers who conduct research and require persistent, organized context for projects and technical work. Sombra offers a free forever plan that does not require a credit card. It positions itself as a knowledge management and context distillation tool for collaborative teams and AI assistants.