Launching December 21, 2027
Essence
Focused native log viewer for Mac
FreeAnalytics1,488 impressionslaunches Dec 21
Essence is a free native focused log viewer for Mac. Custom highlighting rules, minimap, issues panel, smart JS powered tooltips for data enrichment.
Essence is a free native log viewer for macOS with token highlighting, minimap, and smart JavaScript-powered tooltips.
- for
- Developers and sysadmins who need a lightweight log viewer on macOS
- pricing
- free
- license
- open source
works withmacOSJavaScriptNSRegularExpressionYAML
Key features
6 features of Essence
- Native lightweight app — A ~5 MB sandboxed macOS app that runs locally without extra dependencies.
- Token highlighting — Custom regex rules highlight specific log tokens.
- Minimap view — Shows a gutter preview with time-of-day visualization.
- Lenses (smart tooltips) — JavaScript logic can enrich tokens, e.g., convert dates or call external APIs.
- Issue panel — Filters and displays extracted issues from logs.
- Profile import/export — Share or reuse token rules and lenses via YAML files.
Use cases
- Highlight error levels and timestamps in server logs
- Convert UTC timestamps to local time directly in the viewer
- Enrich MAC addresses with vendor names via external API
- Filter and navigate large log files using the minimap
Essence FAQ
How is Essence installed?+
Download the DMG from the Releases page, mount it, and move the .app to /Applications.
Can I keep my settings when updating?+
Yes, replace the .app with the new version; existing profiles and lenses are preserved.
What regex engine does Essence use?+
It uses Apple's NSRegularExpression, compatible with PCRE for most common patterns.
How do lenses fetch external data?+
Lenses can call fetchSync in JavaScript to make HTTP requests, returning the response for display.
Is the app sandboxed?+
Yes, it is notarized, sandboxed, and has entitlements for outgoing connections and file access.
Summarized by DevHunt from github.com · Sep 28, 2026. Details may change; check the official site.
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