Sealbook / Blog
Sealbook blog
Guides built on our data: open-source alternatives, software comparisons and what the numbers say. Repository figures update automatically.
2026-10-19The best open-source alternatives to NotionWorkspaces, wikis and note apps you can self-host, ranked by GitHub stars, with license and maintenance checked.2026-10-19Open-source Airtable alternatives, comparedSpreadsheet-database tools you can self-host, with stars, licenses and activity side by side.2026-10-19The best open-source CRMs on GitHubSelf-hostable alternatives to Salesforce, HubSpot and Pipedrive, ranked by community size.2026-10-19Open-source Zapier alternatives for workflow automationFrom visual no-code builders to developer platforms: the automation tools you can run yourself.2026-10-19Self-hosted alternatives to Vercel, Heroku and NetlifyOpen-source platforms that give you push-to-deploy on your own server.2026-10-19Open-source help desks: alternatives to Zendesk and IntercomLive chat, shared inboxes and ticketing you can host yourself.2026-10-19Open-source Calendly alternatives for booking meetingsScheduling links, group polls and appointment booking you can host yourself.2026-10-19Privacy-friendly, open-source alternatives to Google AnalyticsWeb and product analytics you can self-host, from cookie-free counters to full product suites.2026-10-19Open-source DocuSign alternatives for e-signaturesThree active projects that let you send, fill and sign documents on your own infrastructure.2026-10-19Open-source Postman alternatives for testing APIsAPI clients that work offline, store collections in git and don’t require an account.2026-10-19Open-source alternatives to Auth0, Okta and ClerkIdentity, single sign-on and login for your apps, without per-user pricing.2026-10-19Open-source Firebase alternatives: backends you can ownDatabase, auth, storage and real-time in one package, self-hosted or managed.2026-10-19Open-source Slack alternatives for team chatSelf-hosted team messaging, from Slack look-alikes to federated chat.2026-10-19Open-source password managers: alternatives to 1Password and LastPassPassword vaults whose code anyone can audit, for individuals and teams.2026-10-19Open-source alternatives to Dropbox and Google DriveFile sync and sharing on your own server.2026-10-19Open-source alternatives to Jira, Asana and TrelloProject management and kanban tools you can self-host, ranked by GitHub stars.2026-10-19Open-source BI tools: alternatives to Tableau, Looker and Power BIDashboards and data exploration on top of your own database.2026-10-19Open-source alternatives to Figma, Miro and LoomDesign, whiteboarding and screen recording tools with open code.2026-10-19The most popular open-source AI platforms on GitHubAgent builders, RAG engines and chat interfaces you can run yourself.2026-10-19Open source by the numbers: licenses, languages and maintenance of GitHub’s top reposWhat every GitHub repository with 1,000+ stars tells us. Figures update with each data refresh.