OpenCap Stack vs Cake Equity

OpenCap Stack lands on Depends, and Cake Equity lands on Worth it.

OpenCap Stack

Depends

Confidence: Low

A reasonable free option for technical, pre-Series A founders who will self-host or accept an early-stage product.

Worth it

Confidence: Medium

Buy if you're a seed-to-Series-B startup needing cap tables, options and 409As without Carta's price tag.

OpenCap Stack versus Cake Equity
Compare	OpenCap Stack	Cake Equity
Verdict	Depends	Worth it
Best for	Pre-seed to Series A startups	Seed-Series B startups issuing stock options
Who it's not for	Non-technical founders wanting hands-off hosted service	Two founders with a plain spreadsheet . any cap table tool is overkill pre-employees
Privacy	No known public vulnerabilities found in the sources reviewed.^⁷	No known public vulnerabilities found in the sources reviewed.¹⁵
Support quality	No user support evidence found	G2 reviews praise support; partners cite responsiveness
Public sentiment	No independent third-party reviews or verbatim user quotes were found in the sources reviewed.¹¹	Users praise simple onboarding, clean UI and responsive support, while a minority complain about frequent interface changes.¹²
Biggest gotcha	Hosted pricing not clearly published; free applies to self-hosting . verify before committing^⁹	No tool, Cake included, substitutes for a lawyer-signed vesting agreement

Two founders with a plain spreadsheet . any cap table tool is overkill pre-employees
Public companies needing full enterprise equity admin (Carta/Shareworks territory)
Teams wanting open-source control of cap table data
Buyers who need hands-off accuracy . Cake won't fix a missing vesting agreement