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Open-source backup client for encrypted, compressed, incremental backups to cloud storage and remote servers via SFTP, WebDAV, and more.

Actively maintained

Alternative to:

Duplicacy (Commercial)+15

Open-source proofreading and writing assistant that checks spelling, grammar, punctuation, and style across 30+ languages, with an HTTP API for integrations.

LGPL-2.1Actively maintained

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Grammarly+4

ZITADEL is an open source IAM/CIAM platform providing SSO, MFA, OIDC/OAuth2, SAML, user management, and multi-tenant organizations with audit logging.

AGPL-3.0Actively maintained

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Auth0+19

OAuth2 Proxy is a reverse proxy and middleware that protects web apps with OAuth2/OIDC login and forwards authenticated user identity to upstream services.

MITActively maintained

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Cloudflare Access+14

Open source IT asset management for tracking hardware, software licenses, and assignments, with audit history and a REST API for automation.

AGPL-3.0Actively maintained

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Snipe-IT Hosted+4

Open-source e-signature platform for creating, sending, embedding, and automating legally compliant digital signatures with API and developer tooling.

AGPL-3.0Actively maintained

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Docusign+15

Open-source VPN client for desktop and mobile that can automatically set up a private VPN server and connect using WireGuard, OpenVPN, IKEv2, and obfuscated modes.

GPL-3.0Actively maintained

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NordVPN+15

CrowdSec is an open-source security engine that detects attacks from logs and blocks malicious IPs using bouncers and community-curated threat intelligence.

MITActively maintained

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Fail2Ban+10

A lightweight web interface for yt-dlp (youtube-dl fork) that manages queued downloads, playlists, and filename templates via Docker or local Python/Angular setup.

AGPL-3.0Actively maintained

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4K Video Downloader+10

Self-hosted Dropbox-like web file manager that connects to SFTP, S3, WebDAV, SMB/NFS, Git and more, with sharing links, plugins, and SSO integration.

AGPL-3.0Actively maintained

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Dropbox+19

Lemmy is a federated, self-hostable link aggregator and forum platform for creating Reddit-like communities with voting, comments, moderation tools, and ActivityPub federation.

AGPL-3.0Actively maintained

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Reddit+3

All-in-one open-source mail and collaboration server with SMTP, IMAP, JMAP, CalDAV, CardDAV, and WebDAV, plus integrated anti-spam and phishing protection.

Actively maintained

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Microsoft Exchange Online+19

Open-source authentication and authorization infrastructure with OIDC/OAuth 2.1, SAML SSO, multi-tenancy, MFA, and RBAC for SaaS and AI apps.

MPL-2.0Actively maintained

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Auth0+19

OpenVPN is a widely used open-source VPN daemon providing TLS/SSL-based secure tunneling, flexible client-server and site-to-site modes, and cross-platform support.

Actively maintained

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OpenVPN CloudConnexa+18

Desktop application that centralizes SSH, containers, VMs, Kubernetes and remote file management; integrates local CLI tools and syncs connection data via git.

Apache-2.0Actively maintained

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MobaXterm+6

Open-source database DevSecOps tool for managing schema migrations, SQL review, audit logging, access control, and data masking across multiple databases.

Actively maintained

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Datical (Liquibase Enterprise)+5

Open-source platform to provision secure, self-hosted developer workspaces (VMs, containers, Kubernetes) defined in Terraform, with IDE integrations and AI agent support.

AGPL-3.0Actively maintained

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Coder (Coder Cloud)+6

PHP-based open-source hotel reservation platform providing PMS, booking engine, channel manager and hotel website features for small to enterprise properties.

OSL-3.0Actively maintained

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Cloudbeds+10

Casdoor is an open-source, UI-first IAM/SSO platform supporting OAuth 2.0, OIDC, SAML, LDAP, SCIM, WebAuthn and MFA, with an admin web UI and SDKs.

Apache-2.0Actively maintained

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Okta+19

Git-backed wiki engine that supports multiple markup formats, an integrated editor, and features like diagrams, math rendering, citations, and RSS feeds.

MITSlowing down

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Atlassian Confluence+13

Self-hosted movie collection manager that monitors RSS, searches indexers, and automates downloading, importing, renaming, and quality upgrades via Usenet or torrents.

GPL-3.0Slowing down

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SickChill+1

Lightweight web-based real-time log viewer for Docker containers, with support for Docker Swarm and Kubernetes, plus search, split view, and optional authentication.

MITActively maintained

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Papertrail+9

Self-hosted audiobook and podcast server with multi-user playback sync, metadata management, downloads, and web/mobile clients.

GPL-3.0Actively maintained

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Audible+6

Habitica is an open-source gamified task manager turning Habits, Dailies, and To-Dos into RPG quests with avatars, gear and social features.

Actively maintained

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Habitica+15

Open-source web UI and API for running Ansible, Terraform/OpenTofu, Bash, and PowerShell tasks with project isolation and access control.

MITActively maintained

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Atlantis Cloud+16

Apache Druid is a real-time analytics (OLAP) database delivering sub-second queries on streaming and batch data with high concurrency at scale.

Apache-2.0Actively maintained

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Imply+10

Cross-platform backup and restore tool with snapshot-based incremental backups, client-side end-to-end encryption, compression, and deduplication via CLI and GUI.

Apache-2.0Actively maintained

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Duplicacy (Commercial)+15

Automatisch is an open-source Zapier alternative for building no-code automations that connect apps and services while keeping data on your own infrastructure.

Slowing down

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Zapier+14

BorgBackup is a deduplicating backup program with authenticated encryption and compression for Unix-like systems.

Actively maintained

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BorgBase+14

OpenSearch is an Apache 2.0 open source distributed search and analytics engine for indexing, querying, and analyzing large-scale data with REST APIs.

Apache-2.0Actively maintained

Alternative to:

Amazon OpenSearch Service+19