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  1. Stellarium icon
     379 likes

    Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • PortableApps.com
    The dance of the planets above ESO headquarters, near Munich.
    Constellation lines & art are available for multiple cultures
    59 alternatives
  2. Web Check icon
     62 likes

    Get an insight into the inner-workings of a given website: uncover potential attack vectors, analyse server architecture, view security configurations, and learn what technologies a site is using.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Online
    • Self-Hosted
    Web Check screenshot 1
    Web Check screenshot 1
    19 alternatives
  3. Kagi Search icon
     77 likes

    Subscription-based search engine focusing on privacy, ad-free experience, deep customization, unbiased results, user-controlled features, and strong data protection.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Mac
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Safari
    • Mozilla Firefox
    Kagi Search screenshot 1
    Kagi Search screenshot 1
    Kagi Search screenshot 2
    76 alternatives
    4.2
    Very Good22 reviews
  4. OpenSSH icon
     392 likes

    OpenSSH is a free version of the SSH connectivity tools that technical users rely on. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • iPhone
    • BSD
    • Cygwin
    • Haiku
    • Linux Mobile
    61 alternatives
  5. The Sysinternals Troubleshooting Utilities have been rolled up into a single Suite of tools. This file contains the individual troubleshooting tools and help files. It does not contain non-troubleshooting tools like the BSOD Screen Saver or NotMyFault.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Windows
    Sysinternals Suite screenshot 1
    Sysinternals Suite screenshot 1
    Sysinternals Suite screenshot 2
    38 alternatives
    4.4
    Very Good7 reviews
  6. GNU Emacs icon
     389 likes

    GNU Emacs is an extensible, customizable text editor—and more. At its core is an interpreter for Emacs Lisp, a dialect of the Lisp programming language with extensions to support text editing. The features of GNU Emacs include:

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • BSD
    • Snapcraft
    • F-Droid
    • Haiku
    • Debian
    • MacPorts
    • Homebrew
    The GNU Emacs Manual calls Emacs the extensible, customizable, self-documenting real-time display editor
    Beyond just being able to edit plain text files, Emacs includes special features to help you write in many different human languages and programming/markup languages
    GNU Emacs screenshot 2
    +6
    GNU Emacs screenshot 3
    187 alternatives
    4.3
    Very Good16 reviews
  7. MKVToolnix icon
     239 likes

    MKVToolnix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices and Windows. They do for Matroska what the OGMtools do for the OGM format and then some. The latest builds now have the ability to create WebM compliant Files.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    Works with VxKex NEXT (https://alternativeto.net/software/vxkex-next/)
    MKVToolnix v89.0 in Dark Mode
    MKVToolnix v89.0 in Light Mode
    +5
    MKVToolnix screenshot 3
    33 alternatives
  8. RawTherapee icon
     238 likes

    Powerful cross-platform raw photo processing software offering advanced user control over demosaicing and development. Supports HDR DNGs and image formats.

    Cost / License

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Snapcraft
    • Flathub
    • PortableApps.com
    • Flatpak
    RawTherapee screenshot 1
    RawTherapee screenshot 1
    RawTherapee screenshot 2
    +11
    RawTherapee screenshot 3
    62 alternatives
  9. Natron icon
     222 likes

    Natron is an open source, cross platform nodal compositing application. It is built around industry standard open source tech such as OpenFX, OpenEXR, OpenColorIO and OpenImageIO. The feature set includes realtime playback/RAM cache, multi-threaded rendering, 2d tracking...

    Cost / License

    Platforms

    • Mac
    • Windows
    • Linux
    • FreeBSD
    • Flathub
    Natron screenshot 1
    Natron screenshot 1
    21 alternatives
    3.8
    Good6 reviews
  10. ShutUp10++ icon
     160 likes

    O&O ShutUp10++ means you have full control over which comfort functions under Windows 10 and Windows 11 you wish to use, and you decide when the passing on of your data goes too far. Using a very simple interface, you decide how Windows 10 and Windows 11 should respect your...

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Windows
    ShutUp10++ screenshot 1
    ShutUp10++ screenshot 1
    ShutUp10++ screenshot 2
    +2
    ShutUp10++ screenshot 3
    4.2
    Very Good18 reviews
  11. opencode icon
     38 likes

    Terminal-based AI coding assistant with native UI, LSP support, shareable session links, multi-model integration, multi-session management, and open source licensing.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    opencode screenshot 1
    90 alternatives
  12. Stack Overflow icon
     470 likes

    Stack Overflow, part of Stack Exchange, is a free, community-driven, reputation-based Q & A site for computer programmers. No membership is required to ask questions or provide answers to questions by others.

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    Main Page
    48 alternatives
    2.8
    Poor12 reviews
  13. TinEye icon
     274 likes

    Efficient reverse image search engine that identifies exact usages and altered images online, provides source information, and ensures ad-free, lightweight experience.

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • Online
    • Microsoft Edge
    • Google Chrome
    • Opera
    • Mozilla Firefox
    TinEye screenshot 1
    TinEye screenshot 1
    TinEye screenshot 2
    52 alternatives
  14. Claude Code icon
     45 likes

    AI assistant for terminal-based development optimized with advanced code understanding, codebase search, multi-file editing, IDE integration, and explicit user control.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Visual Studio Code
    • Homebrew
    • npm
    • JetBrains IDE
    • Online
    Claude Code screenshot 1
    Claude Code screenshot 1
    Claude Code screenshot 2
    +3
    Claude Code screenshot 3
    123 alternatives