Mastros.online
Mastros is a suite of privacy-first Chrome extensions for exporting useful data from Telegram, WhatsApp, LinkedIn, Instagram and TikTok. Pull group members, contacts and chat history into CSV or Excel in a few clicks, without sharing your login or uploading anything. Everything runs locally in your browser. Built for marketers, sales teams, community managers and recruiters who need their data in a spreadsheet, not locked inside an app.
Mastros.online
Mastros is a suite of privacy-first Chrome extensions for exporting useful data from Telegram, WhatsApp, LinkedIn, Instagram and TikTok. Pull group members, contacts and chat history into CSV or Excel in a few clicks, without sharing your login or uploading anything. Everything runs locally in your browser. Built for marketers, sales teams, community managers and recruiters who need their data in a spreadsheet, not locked inside an app.
Ranked #2834 on TrustMRR
131 active subscriptions
Elias116 followers on 𝕏
ItalyRevenue is verified with
Stripe API key.Last updated: Nov 15, 2026, 05:59 PM
Getting your lists, data, contacts and media from different social media is complex. With Mastros you can do it safely and quickly
These platforms make it hard to get your own data out. Copying members, contacts or conversations by hand takes hours, and most scraping tools want your login or send your data to their servers. Mastros runs locally, so nothing leaves your browser.
Pricing
Free, Pro 9$, Scale 18$
Team size
1 person
Funding
Bootstrapped
Domain Rating
mastros.online
Ahrefs Domain Rating measures backlink profile strength on a 0 to 100 logarithmic scale.
Marketing channels
Tech stack
Backend
Additional info
5 star rated on chrome web store, 2000+active weekly users.
Screenshot
mastros.onlineProduct updates
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