Signal by NFX is a free investor-search directory. Here are the honest alternatives — free databases, workflow platforms.
Signal by NFX is a well-known free directory for finding investors. It's a useful reference — but it's a lookup tool, not a workflow. Here are the real alternatives depending on what you actually need.
OpenVC is the closest free alternative — larger investor list, community-maintained, similar caveats around data freshness. Same category as Signal: reference material, not a workflow.
Signal makes you filter and search. A workflow platform like Startup Fundraising takes your deck and stage and returns a matched list — same starting question, different ending. Better when you don't want to spend two afternoons filtering.
Signal does not track your pipeline, log outreach, or manage follow-ups. For that you'd add Attio, Notion, or a fundraise-specific tool. Signal + Notion is a common founder setup; a fundraise-specific tool folds both jobs into one.
Signal doesn't score decks. Standalone deck-scoring tools exist, and a fundraise platform typically includes it alongside the investor matching.
Signal is free and good at what it does — investor search. If search is all you need, use it. If you need matching, outreach, pipeline, or feedback, you'll either stitch several free tools together or use a workflow platform that does the whole job.