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source-lm vs SocialFo

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

source-lm compared with SocialFo
Detailsource-lm logo source-lmSocialFo logo SocialFo
What it doesChrome extension to bulk-add sources to NotebookLM from JSON exports, YouTube, and web pages Not given
StageNot given Not given
FoundedNot given Not given
Based inES Not given
Pricing modelPaid Freemium
PricingFree plan: 5 bulk actions per month, single sources always free. Pro licence: $29 one time, unlimited bulk runs. Free plan: up to 1,000 followers or following exports. Pro version: unlimited exports with additional premium features.
Key features
  • Split JSON exports into Markdown files with 400,000-word budget
  • Filter sources, detect duplicates, and batch delete
  • Incremental uploads skip already-added content
  • No account or login required
  • Source-available code published unminified
  • No data written to disk or stored on servers
  • Supports Telegram Desktop and Telegram for macOS exports
  • One-click CSV exports
  • History Manager to track scraped data
  • Export rich user profile data
  • User-friendly interface
  • Local data processing
What makes it different
  • No backend or recurring costs: pay once, keep the licence forever
  • Runs entirely in your browser with no account or login needed
  • Smart splitting keeps records whole and avoids duplicates on re-runs
  • Source-available and unminified so you can audit the code yourself
  • Extends NotebookLM's interface with bulk operations and source management tools
  • All data processing happens locally on your device with no server storage
  • One-click export to CSV
  • Export comprehensive user profile information
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)15 −1 (down) since last check5 no change since last check
Trust Flow (Majestic)183
Citation Flow (Majestic)1517
Referring domains (Majestic)2417

4 details filled in for both companies.

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