Open Glean
Overview
Open-source AI workspace over Hydra DB for asking questions across memories, files, and connected apps with cited answers.
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Open Glean is an open-source AI workspace for knowledge work built over Hydra DB. It lets users ask questions across memories, files, saved webpages, and connector-synced knowledge, then retrieves context, streams cited answers, and supports a Deep Research mode that plans sub-questions and compiles findings.
AI Agent Store research
What the evidence says about Open Glean
Open Glean is distinctive as an open-source AI workspace layered on Hydra DB: it combines retrieval across stored memories, files, saved webpages, and connector-synced knowledge with cited answer generation, scope controls, Deep Research planning, a knowledge-graph mindmap, and bring-your-own-model support through OpenAI-compatible endpoints.
Verified September 22, 2026
Verified capabilities
- Cited question answering
The Ask feature retrieves context from a Hydra database and streams an answer with inline citations, a sources panel, and optional web search through OpenRouter's web plugin.[1]
- Deep Research workflow
Deep Research plans a DAG of sub-questions, runs each level against Hydra in parallel, writes findings per branch, deduplicates sources into a numbered citation list, and then writes the final answer.[1]
- Scope switching
Users can choose the database and collections a query searches, with retrieval fanning out across selected collections.[1]
- Unified context
The app brings together memories, files, saved webpages, and connector-synced knowledge in one workspace.[1]
- Collections
Queries can be scoped to a collection, and users can open a single collection to search within it.[1]
- Mindmap
Open Glean includes a mindmap for the knowledge graph that Hydra builds from the user's context.[1]
- Integrations
Users can connect Hydra connectors, verify credentials, discover resources, and start syncing from inside the app.[1]
- Bring your own model
Open Glean supports any OpenAI-compatible endpoint and includes a searchable OpenRouter model picker with favourites.[1]
- Server-side key handling
The Next.js server proxies requests to the official @hydradb/sdk, with keys held in an encrypted httpOnly session cookie and used server-side rather than in the browser.[1]
Where it fits best
- People who want an open-source knowledge-work assistant for asking questions across memories, files, saved webpages, and connected apps while receiving answers with citations.[1]
- Users who need multi-step research workflows, because Deep Research plans a DAG of sub-questions, runs levels in parallel against Hydra, writes findings, deduplicates sources, and produces an answer.[1]
- Teams or builders that want to self-host a Next.js app and use their own Hydra DB key.[1]
Buying and deployment notes
The supplied official source verifies that Open Glean is open-source code under an Apache-2.0 license and can be run by users with their own Hydra DB key; no hosted pricing page or paid plan details are provided in the supplied context.[1]
Platforms: Web, GitHub, Next.js[1]
Deployment: Self-hosted, Hydra DB-backed workspace[1]
Important considerations
- The project is described as running over Hydra DB, and the self-hosted path requires a Hydra DB key.[1]
- The supplied official source does not provide hosted-service pricing details; it only verifies the open-source repository and self-run option.[1]
- Model flexibility is framed around bringing an OpenAI-compatible endpoint, so users need access to a compatible model provider if they do not use the built-in OpenRouter picker.[1]
Sources and research method (1)
We record only claims tied to public sources checked by our team or listing workflow. Counts above are derived directly from this profile, not a subjective rating.
Autonomy level
50%
Comparisons
Custom Comparisons
Some of the use cases of Open Glean:
- Searching across personal or team knowledge stored in Hydra DB
- Generating answers with inline citations from connected context
- Running multi-step research across files, memories, webpages, and synced app data
- Exploring a Hydra-built knowledge graph through a mindmap
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