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Best Plugins & Extensions Software in 2026

Plugins and extension software helps manage, install, or build add-ons for applications and services. Tools in this category can run on macOS, Linux, Windows, self-hosted setups, the web, or through an API.

  1. 1

    Backstage

    Free plan APILinuxMac+2

    Backstage brings a software catalog, documentation, templates, search, and integrations into a customizable developer portal.

    7.7 Free plan Visit site
  2. 2

    Kingfisher

    Free plan LinuxMacSelf-hosted+1

    Kingfisher combines broad secret scanning with report formats, pre-commit hooks, and optional credential-response features.

    7.4 Free plan Visit site
  3. 3

    tmux

    Free plan APILinuxMac+1

    tmux organizes terminal work into persistent sessions, windows, and panes, with support for shared sessions. Building from source requires the listed development dependencies.

    7.1 Free plan Visit site
  4. 4

    Chrome Browser Cloud Management

    Free plan AndroidiPhoneLinux+3
    6.5 Free plan · paid from $6/user/mo Visit site
  5. 5

    dein.vim

    Free plan LinuxMacWindows
    6.3 Free plan Visit site
  6. 6

    Elpaca

    Free plan LinuxMacWindows
    6.3 Free plan Visit site
  7. 7

    Jenkins Plugin Installation Manager Tool

    Free plan LinuxMacWindows
    6.2 Free plan Visit site
  8. 8

    Mason.nvim

    Free plan LinuxMacWindows
    6.1 Free plan Visit site
  9. 9

    PF4J

    Free plan LinuxMacWindows
    6.1 Free plan Visit site
  10. 10

    Apache Felix

    Free plan
    6.0 Free plan Visit site
  11. 11

    ManageEngine Browser Security Plus

    Free plan MacWindows
    6.0 Free plan · 30-day trial Visit site
  12. 12

    pluggy

    Free plan LinuxMacWindows
    6.0 Free plan Visit site
  13. 13

    Easy Updates Manager

    Free plan
    5.9 Free plan · paid from $29/yr Visit site
  14. 14

    straight.el

    Free plan LinuxMacWindows
    5.9 Free plan Visit site
  15. 15

    Sheldon

    Free plan LinuxMac
    5.8 Free plan Visit site
  16. 16

    Sublime Package Control

    Free plan LinuxMacWindows
    5.8 Free plan Visit site
  17. 17

    vim-plug

    Free plan LinuxMacWindows
    5.8 Free plan Visit site
  18. 18

    Vundle.vim

    Free plan LinuxMacWindows
    5.7 Free plan Visit site
  19. 19

    Stevedore

    Free plan Linux
    5.6 Free plan Visit site
  20. 20

    Plugin Update Checker

    Free plan
    5.5 Free plan Visit site
  21. 21

    WP Rollback

    Free plan Web
    5.5 Free plan · pricing on request Visit site
  22. 22

    Zinit

    Free plan LinuxMac
    5.5 Free plan Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare the free plan, paid starting price, extension focus, marketplace listing, automatic updates, permission controls, version rollback, and visual builder support. If you need to read or change code, check the licence terms.

Questions

Which platforms do these tools support?

The category includes tools for macOS, Linux, Windows, self-hosted setups, the web, and API use. Check the platform listed for the tool you are considering.

Do these tools have free plans?

A free plan is listed for tools in this category. Freemium products can add paid features, so review the plan details before choosing.

What paid starting prices are shown?

Chrome Browser Cloud Management lists paid plans from $6 per user per month. Easy Updates Manager lists paid plans from $29 per year.

Is a free trial available?

ManageEngine Browser Security Plus lists a 30-day trial. Check its terms to see what the trial includes.

Can I read or change the source code?

Check the licence for the tool you choose. The licence explains whether you can read, modify, and redistribute its code.

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