Reviews of Open With

By: Geoff Lankow Add-on

List of user reviews and ratings for Open With

Total ratings

3.62 (Rating count: 182)

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Review summary

Open With is praised for providing a useful open-with capability and is considered one of the few reliable options for this purpose. However, it is widely reported as no longer maintained, with compatibility issues on newer Firefox versions and some hardware. Installation is often complex, requiring Python and manual steps, and reliability varies across users. Overall, it can be very useful when it works, but maintenance and compatibility problems limit its usability for many.

Pros

Provides the core ability to open links/files in external applications directly from Firefox.
Widely regarded as one of the few, best add-ons for this purpose and described as actually working as designed.
When properly installed and configured (including the optional Python helper), it can work reliably.
Useful for opening media with external players (e.g., MPV, VLC, MPC-HC) and for workflows like YT-DLP.
Overall positive reputation as a great app / best add-on for the declared purpose.

Cons

No longer maintained by the developer; discontinued with reported compatibility issues.
Not working for many users on newer Firefox versions and some platforms (e.g., m2 Macs).
Installation is non-user-friendly and often requires Python and manual steps; described as 'Only for Unix geeks'.
Reliability concerns—some users cannot get it to work or can't obtain debugging info.

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User Reviews

Recent rating average: 3.40

All time rating average: 3.62

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17% (26)

Date	Author	Comment
2026-03-09	Ko*****	❌ is no longer maintained :(
❌ is no longer maintained :(
2026-02-19	Fe*****

2025-07-20	Fi*****	更新がないために移行します
更新がないために移行します
2025-06-14	ma*****	No longer maintained. Gemini reports the Python file you need to execute as: "The script's primary purpose is to allow a browser extension to execute commands on the local machine. This capability, while useful for legitimate purposes (like opening files with specific applications), inherently carries a security risk. The direct execution of receivedMessage without apparent input validation is a critical vulnerability."
No longer maintained. Gemini reports the Python file you need to execute as: "The script's primary purpose is to allow a browser extension to execute commands on the local machine. This capability, while useful for legitimate purposes (like opening files with specific applications), inherently carries a security risk. The direct execution of receivedMessage without apparent input validation is a critical vulnerability."
2025-03-18	iG*****	The only and best add-on for the declared purpose.
The only and best add-on for the declared purpose.
2025-01-09	Eb*****

2024-12-17	Fi*****	Several years ago the developer stopped supporting his plugins to focus on Thunderbird. I hope he isn't the one responsible for how bad Thunderbird is now, because if so he should have stuck to plugins.
Several years ago the developer stopped supporting his plugins to focus on Thunderbird. I hope he isn't the one responsible for how bad Thunderbird is now, because if so he should have stuck to plugins.
2024-12-16	sa*****	>3. Open a command prompt. Run the file with the argument "install", like this: >open_with_windows.py install >If you move the file, you must run this step again. Note for the noobs like me: The command should be: python open_with_windows.py install
>3. Open a command prompt. Run the file with the argument "install", like this: >open_with_windows.py install >If you move the file, you must run this step again. Note for the noobs like me: The command should be: python open_with_windows.py install
2024-11-14	Vi*****	Works well, just follow the installation instruction (native client)
Works well, just follow the installation instruction (native client)
2024-07-31	VI*****