T3 T3rnel Browser

Comparison

Verified against publicly documented behaviour as of 23 August 2026.

Versus MCP browser automation tools

T3rnelChrome DevTools MCPPlaywright MCPmcp-chromeBrowser UseBrowser MCPNanobrowserAgent BrowserStagehand
Your existing profileYesNoNoYesNoYesYesNoNo
Logged-in sessions workYesNoNoYesNoYesYesNoNo
Real browser fingerprintYesAutomation flagsAutomation flagsYesAutomation flagsYesYesAutomation flagsAutomation flags
Tool count97~26~25~20~1511~10~15~10
CDP trusted inputYesYesNoYesNoNoNoNoNo
Contenteditable editorsYesNoYesNoYesYesNoNoNo
Credential redactionYesNoNoNoNoNoNoNoNo
Approval gate that refusesYesNoNoNoNoNoNoNoNo
Prompt-injection flaggingYesNoNoNoNoNoNoNoNo
Delta snapshotsYesNoNoNoNoNoNoNoNo
Time-travel timelineYesNoNoNoNoNoNoNoNo
Export Playwright/Cypress codeYesNoNoNoNoNoNoNoNo
CSS inspectionYesNoNoNoNoNoNoNoNo
Human-facing GUISide panelCLICLIMinimalLibraryMinimalSide panelCLILibrary
Local-onlyYesYesYesYesOptional cloudYesYesYesCloud option
PriceFree + $29.99FreeFreeFreeFreeFreeFreeFreeFree + paid cloud
LicenceProprietaryApache-2.0Apache-2.0MITMITProprietaryApache-2.0MITMIT
Color pickerYesNoNoNoNoNoNoNoNo
React component inspectionYesNoNoNoNoNoNoNoNo
Clear cache / hard reloadYesNoNoNoNoNoNoNoNo
Structured form fillingYesYesYesYesYesYesNoYesYes
One-call form clearingYesNoNoNoNoNoNoNoNo

Versus CSS inspection tools

T3rnel ProCSS ScanCSS PeeperVisBug
Hover inspect and copyYesYesYesPartial
Pseudo-classes, media queries, keyframesYesYesNoNo
Authored unit preservationYesYesNoNo
Tailwind conversionYesYesNoNo
styled-components / Emotion / JSX outputYesNoNoNo
Honest partial reporting on cross-origin sheetsYesNoNoNo
Full-page screenshots and annotationYesNoNoNo
Visual regression testingYesNoNoNo
Test code exportYesNoNoNo
AI agent controlYesNoNoNo
Price$29.99 one-time~$100–120 lifetimeFreeFree

Versus screenshot extensions

T3rnelGoFullPageAwesome ScreenshotFireshot
Full-page stitched captureYesYesYesYes
Sticky header pinningYesPartialPartialPartial
Cookie banner auto-dismissYesNoNoNo
Blur / redactYesNoYesYes
Visual regression baselinesYesNoNoNo
Programmatic capture for agentsYesNoNoNo
Local-only, no accountYesYesAccount for cloudYes

Versus color picker extensions

T3rnelColorZillaEye DropperPika
Eyedropper from any pixelYesYesYesYes
Palette from the whole pageYesYesNoNo
Export hex / rgb / hsl / CSS varYesYesPartialYes
MCP access for agentsYesNoNoNo
Works in side panel, not a new tabYesPartialNoNo

Versus React debugging extensions

T3rnelReact DevToolsLocatorJSReactime
Component treeYesYesPartialYes
Props and hooks inspectionYesYesNoYes
Highlight element from componentYesYesYesNo
MCP access for agentsYesNoNoNo
Local-only, no accountYesYesYesYes

Versus form filler extensions

T3rnelFake FillerForm FilleriMacros
Detect visible form controlsYesYesYesYes
Fill from JSON / agent instructionsYesNoPartialPartial
Human approval before submitYesNoNoNo
MCP access for agentsYesNoNoNo
Local-only, no accountYesYesYesAccount for cloud

Versus cache clearing extensions

T3rnelClear CacheCache KillerEmpty Cache Button
Clear cache for current originYesYesYesYes
Hard reload current pageYesYesPartialYes
Clear cookies / site dataYesPartialNoPartial
MCP access for agentsYesNoNoNo
Local-only, no accountYesYesYesYes