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Top 5 JavaScript web-extension Projects
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This is probably a bit unorthodox, but I use tab session manager [0] for firefox. I started using it mainly to be able to save an open window to return to a project, and it ended up replacing my bookmarks. My issue with bookmarks was always the friction of managing them, but for whatever reason it fits my mental model to organize by open windows.
It's really nice to open up a window or group of windows related to a project that I haven't touched in a few months and it just be one click. Plus, if I open up new tabs those also get saved for the next time. It also works for easily pulling up my regular work session so I don't need to manually open up the 8 or so tabs I always need in a workday. Something toaybe check out if you already organize open windows by task or project.
[0] https://tab-session-manager.sienori.com/
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SingleFileZ
Web Extension to save a faithful copy of an entire web page in a self-extracting ZIP file
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ExtPay
The JavaScript library for ExtensionPay.com — payments for your browser extensions, no server needed.
Project mention: Ask HN: To those with successful browser extension(s), how did you grow it? | news.ycombinator.com | 2024-11-22I've heard good things about ExtensionPay[1]. It didn't have what I needed at the time so I hand rolled my own on Firebase using a Stripe integration component[2]. As you probably know the issue with extensions is that the whole codebase is exposed so you need some kind of back end if you're handling payments and associated secret stores.
[1] https://extensionpay.com/
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
JavaScript web-extensions discussion
JavaScript web-extensions related posts
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Tab Session Manager: browser extension for persisting tab state
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Sessionic: A cross-browser extension to save, manage, restore tabs and sessions
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Happened to me recently, heartbreaking. I was emotionally attached to them
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I really need help, i need to reset my phone, but I have either 773 tabs or 773 sessions saved in kiwi(NOT bookmarks) I only have 5 bookmarks.
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Considering a move from WF Classic to main WF, question about Session Manager
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And no, I haven't removed all the videos on it that I *did* manage to watch...
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Tab saving extension that respects privacy
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A note from our sponsor - SaaSHub
www.saashub.com | 1 Sep 2025
Index
What are some of the best open-source web-extension projects in JavaScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Tab-Session-Manager | 2,124 |
| 2 | SingleFileZ | 1,895 |
| 3 | simple-translate | 1,232 |
| 4 | ExtPay | 653 |
| 5 | addons-linter | 342 |
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