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Cosign
Last discussed Sep 25, 2026
A professional reputation platform for the startup community that allows users to publicly and privately endorse people and companies, building a directory of co-signs, endorsements, and professional connections.
Recently discussed in
How to Spot Exceptional Talent Before Everyone Else
a16z · Sep 25, 2026
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a16z
mentioned
Used for: Building a comprehensive professional reputation directory for the startup community, enabling public and private endorsements of people and companies
Praised: Captures ephemeral social endorsements durably on profiles, provides granular...
vs: Compared to LinkedIn (treats all connections the same, endorsements haven't t...
"We're super excited to announce Cosign, a product that is around professional reputation for the startup community and really just trying to be the most comprehensive directory of companies and people."
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