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Dev tools · alternatives · 2026

24 alternatives to Free, open-source tool for backing up Microsoft 365 Data – Corso

Free, Secure, and Open-Source Backup for Microsoft 365 - alcionai/corso

Corso is a free, open-source backup tool designed for Microsoft 365 data. It enables users to back up and restore information from Microsoft 365 services. The tool is built for developers and IT administrators who need… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Free, open-source tool for backing up Microsoft 365 Data – Corso launched in 2023; newer entries below may have overtaken it.

  1. 1
    Corso▲90

    Free, secure, open-source backup for Microsoft 365

    2023 · its alternatives →

  2. 2
    Plakar▲288

    It’s still young, but they are shipping fast, and it's open source. Anyone else playing with it?

    2025 · plakar.io · its alternatives →

  3. 3

    Creator here. I was looking for something as simple as Backblaze Personal [1] but privacy focused and open source. This is my attempt to build that. Uses PyQt6 [2] for the GUI and Pyinstaller [3] for creating the platform specific binaries. The backup engine under the hood is Restic [4]. The server code is written in Laravel [5]. All the code is on GitHub [6]. I actually really like Backblaze (even use B2 for this offering behind the scenes) so this isn't meant to throw shade their way. Just wanted a private open source alternative. Something like Bitwarden but for backups. [1]…

    2022 · blobbackup.com · its alternatives →

  4. 4

    nFreezer is an encrypted-at-rest backup tool. Contribute to josephernest/nfreezer development by creating an account on GitHub.

    2020 · github.com · its alternatives →

  5. 5

    Open Source dashboard and analytics for Cursor IDE

    2024 · its alternatives →

  6. 6

    Immutable cloud storage with multi-cloud redundancy. Zero-knowledge encryption, unlimited devices. Built on restic — no vendor lock-in. From $5/month.

    2018 · relicabackup.com · its alternatives →

  7. 7
    DBacked▲148

    Simple, secure database backup as a service 🛠️

    2018 · its alternatives →

  8. 8

    Open source PostgreSQL backup tool

    Dec 2025 · its alternatives →

  9. 9
    Reindeer▲355

    Cursor for databases

    Nov 2025 · tryreindeer.com · its alternatives →

  10. 10
    Petti▲120

    Effortless database backups

    2024 · petticloud.com · its alternatives →

  11. 11
    Mongotron▲114

    Open source cross platform MongoDB management

    2015 · cienciaespiritual.com · its alternatives →

  12. 12

    A truly Open Source MongoDB alternative. Contribute to FerretDB/FerretDB development by creating an account on GitHub.

    2023 · github.com · its alternatives →

  13. 13
    Dumper▲64

    Offsite backup for databases

    2017 · its alternatives →

  14. 14

    A simple command line backup solution using rsync. Contribute to PenguinSnail/Quick-Back development by creating an account on GitHub.

    2016 · github.com · its alternatives →

  15. 15

    A simple paper backup tool for GnuPG or SSH keys. Contribute to ooguz/papyrus development by creating an account on GitHub.

    2023 · github.com · its alternatives →

  16. 16

    A tool for programmatically verifying database backups - forward3d/uphold

    2016 · github.com · its alternatives →

  17. 17

    Backup tool for exporting Microsoft 365 mailbox data

    2022 · migrateemails.com · its alternatives →

  18. 18

    Advanced solution to backup and migrate Thunderbird emails

    2022 · migrateclouddata.com · its alternatives →

  19. 19

    Welcome to K8up - a Kubernetes Backup Operator

    2019 · k8up.io · its alternatives →

  20. 20

    NAKIVO Backup is a reliable backup for Microsoft 365 data.

    2021 · nakivo.com · its alternatives →

  21. 21

    BackupRocket The dead-simple backup tool you'll actually use

    2025 · solaireguild.gumroad.com · its alternatives →

  22. 22

    Hi HN, I built Cloudstic (https://github.com/Cloudstic/cli), an open-source Go CLI that creates encrypted, deduplicated, point-in-time backups of your Google Drive, OneDrive, and local files. The Problem Google Drive and OneDrive are sync tools, not backup tools. If you accidentally delete a folder, it’s gone everywhere. If ransomware encrypts your local files, the "mistake" propagates to the cloud immediately. There is no easy way to say: "Restore my entire Drive exactly as it looked on January 15th." Why not just use Restic or Borg? I’m a huge fan of Restic, and…

    Mar 2026 · github.com · its alternatives →

  23. 23

    Backup Office 365 Mailboxes into Multiple Platforms

    2023 · forensiksoft.com · its alternatives →

  24. 24PO

    I’m working on Portabase, a self-hosted, open-source tool for managing database backups and restores. It currently supports PostgreSQL, MySQL, and MariaDB, with MongoDB coming soon. It uses an agent-based architecture with a central server and lightweight agents, enabling deployment at the edge and operation across multiple networks. Website: https://portabase.io GitHub: https://github.com/Portabase/portabase Discord (newly created): https://discord.gg/Wgv7xZ8fWJ Main features: - Scheduled logical backups with multiple retention strategies…

    Jan 2026 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →