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Utilo vs Altseat

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

Utilo compared with Altseat
Detail UtiloAltseat logo Altseat
What it doesFree online developer tools that run privately in your browser Run multiple Claude Code, Codex and Kimi Code accounts on one Mac with automatic usage tracking and handoff
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given Free for up to 2 accounts total across all three tools. Lifetime license USD 12 one-time (launch price through 30 November 2026, then USD 19), allowing up to 10 accounts per tool on one Mac. One payment, no subscription.
Key features
  • JSON formatter, validator, and converter to YAML, CSV or TypeScript
  • JWT decoder for inspecting token header, payload and expiry
  • QR code and barcode generator with custom colors and download options
  • Image compressor for batch processing to WebP, JPEG or PNG with quality slider
  • curl converter between curl, fetch, axios, Python, Go, Node and PHP
  • Hash generator supporting MD5, SHA-1, SHA-256, SHA-384, SHA-512
  • Cron expression builder and parser with next run times
  • JSON diff tool with structural comparison and collapsible tree
  • SQL formatter and dialect converter for MySQL, PostgreSQL, SQLite and SQL Server
  • Certificate decoder for PEM certificates, chains and CSRs with SANs and fingerprints
  • Menu bar usage display for Claude Code and Codex accounts
  • Automatic account switching when limits reached
  • Automatic handoff for Claude Code sessions
  • Shared settings and sessions across accounts
  • MCP server synchronization across Claude accounts
  • Support for up to 10 accounts per tool
  • Signed and notarized by Apple
  • In-app updates from the menu bar
  • 14-day refund guarantee
What makes it different
  • All tools run client-side in your browser with no data uploads to servers
  • Fast static site served from global edge network with no sign-up required
  • Clean interface available in 10 languages with dark mode and keyboard shortcuts
  • Free to use forever with non-intrusive ads never accessing tool data
  • Built as static Next.js export preventing server-side processing of sensitive data
  • Automatic handoff continues conversations seamlessly between accounts without interruption
  • Never handles passwords or refreshes tokens, keeping credentials secure
  • Only switches between processes, never changes login of running session
  • Real-time usage visibility for multiple Claude Code and Codex accounts in one place
  • One-time lifetime license with no subscription required
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)2 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)40
Citation Flow (Majestic)174
Referring domains (Majestic)41

4 details filled in for both companies.

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