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LinkwardenNotes & Knowledge ManagementOpen-source collaborative bookmark manager under AGPL-3.0. It preserves every saved page in several formats, adds highlights, shared collections, RSS, full-text search and mobile apps, and runs self-hosted with Docker or as a paid Cloud plan.Open sourceSelf-hostedFreemium
OmnigraphDatabasesOmnigraph is a Rust graph database from Modern Relay that stores graphs as Lance files on local disk or S3-compatible storage. It adds typed .pg schemas, branches with three-way merge, vector and full-text search, Cedar policy and MCP access.Open sourceSelf-hosted
Paperless-ngxPDF & Document ToolsPaperless-ngx is a GPL-3.0 document management system you run with Docker. It OCRs scans with Tesseract, stores PDF/A copies beside originals, auto-tags documents, imports email attachments and offers opt-in AI features.Open sourceSelf-hosted
PapraPDF & Document ToolsOpen-source document archiving platform with organizations, tags, full-text search, OCR, email and folder ingestion, encryption, an API, a CLI and a mobile app. Self-host with Docker or use the hosted service.Open sourceSelf-hostedFreemium
SeekStormSearch EnginesSeekStorm is an Apache-2.0 search engine in Rust with BM25F full-text search, an IVF vector index and hybrid queries fused with RRF. It ships as a library, a multi-tenancy REST server with web UI, an MCP server and SeekStorm Cloud.Open sourceSelf-hostedFreemium
Sync-inFile Sharing, Sync & ManagementSync-in is an AGPL-3.0 self-hosted platform for file storage, sharing, synchronization and collaboration, with spaces, guests, WebDAV, desktop sync clients, full-text search and Collabora or OnlyOffice editing.Open sourceSelf-hosted
ZenNotes & Knowledge ManagementZen is an AGPL-licensed, single-user notes server: Markdown stored in SQLite, tags and Focus Modes instead of folders, BM25 search, version history, templates, tag-scoped API tokens and an experimental MCP server. It runs from Docker or one Go binary.Open sourceSelf-hosted