Open-Source Tools Built With Go (2026)
Self-hostable software written in Go.
If you prefer to run software written in Go — for easier auditing, contributing, or self-hosting on a stack your team already knows — these 9 open and self-hostable tools are built with it. Go projects tend to be easy to deploy alongside the rest of your Go infrastructure.
Open-source, peer-to-peer continuous file synchronization with no central server required.
- Zero recurring cost and zero third party — files sync directly between your own devices
- MPL-2.0 licensed, actively developed since 2013 with 86k+ GitHub stars
- No web-based file browser, sharing links, or public link sharing — it's device sync, not a storage portal
Single-file open-source backend — SQLite, auth, realtime, and admin UI packed into one Go binary.
- Zero external dependencies — one binary is the entire production backend
- Tiny resource footprint runs comfortably on a $5/month VPS or a Raspberry Pi
- SQLite write concurrency ceiling makes it unsuitable for high-write production workloads
Open-source, self-hosted team messaging built for security-conscious and DevOps teams.
- Full data sovereignty — runs on your own servers with no vendor access
- MIT-licensed core is free to self-host with no seat caps
- UI and mobile experience lag behind Slack's polish
Self-hosted, high-performance newsletter and mailing-list manager — pair with any SMTP provider.
- Zero per-contact or per-send cost — pay only for SMTP delivery
- Single Go binary with PostgreSQL — trivial to run on a cheap VPS
- No hosted/managed version — you own infrastructure, backups, and deliverability
Open-source web file manager that puts a modern UI in front of storage you already have.
- Connects to storage you already run instead of requiring a data migration
- Broadest backend/connector list of any tool in this category (S3, SMB, FTP, Drive, and more)
- It's a UI/gateway layer, not a storage engine — you still need underlying storage (S3, SMB, etc.) configured
Open-source to-do and task management app you can self-host in one Go binary.
- Single Go binary self-hosting — no external database required for small installs
- Genuinely covers both personal to-do lists and small-team project boards
- AGPL-3.0 licensed, which restricts commercial SaaS resale of a modified version
Open-source customer data platform built around the warehouse, with self-hosting and 200+ destinations.
- AGPL core is self-hostable with no event-volume billing on your own infra
- Segment-compatible API makes migration a drop-in replace for instrumentation
- AGPL license requires open-sourcing modifications to the server if distributed externally
Open-source content collaboration and file-sharing platform built on a Go microservices core.
- Rebuilt from the original Pydio PHP codebase into a modern Go microservices stack (Cells)
- Workflow engine lets you trigger automations on file events without external tooling
- Smaller community and slower release cadence than Nextcloud or Seafile
Open-source file sync and share platform, rebuilt in Go for large-scale deployments.
- Apache-2.0 licensed — the most permissive license of any tool in this category
- Go microservices architecture scales and deploys more predictably than legacy PHP ownCloud
- Much younger rewrite than Nextcloud or Seafile — smaller community and fewer third-party integrations