Signal by NFX
Signal by NFX: A free investor discovery tool built around profiles, relationships, and fundraising tracking. Ranked #13 of 31 in Investor Databases by our editors (8.0/10); pricing: Free plan; best for free relationship-based investor discovery.
At a glance
- Editor score8.0 / 10
- PricingFree plan
- Best forFree relationship-based investor discovery
- Free planYes
- Paid fromFree
- Investor typesMixed
- Facts checked20 Sep 2026
Where it wins
- Free access to investor search, profiles, and fundraising tracking
- Gmail paths help identify potential investor introductions
- Private co-investor lists and sector rankings support prioritization
Where it doesn't
- Does not provide verified contact details
- No export or API access
- Integrations are limited beyond Gmail and Google OAuth
Our verdict on Signal by NFX
Signal by NFX is a free, community-driven investor network and database for startup founders, venture capitalists, scouts, and angels. Founders can search investors by sector and funding stage, review profiles with investment preferences and past investments, and organize fundraising outreach. The product also supports investor introduction lists, preferred co-investor lists, and rankings by sector and stage.
The Free plan includes investor search, investor profiles, fundraising tracking, and preferred co-investor lists. Its standout workflow connects investor discovery with Gmail-based relationship and introduction-path discovery, helping founders identify connections that may support an introduction. Profiles can include sectors of expertise, target criteria, investment preferences, and past investments. Community-sourced information is described as continuously updated by the Signal community.
Signal runs on the web and integrates with Gmail and Google OAuth. Its focus is relationship-based discovery and fundraising organization rather than a broad prospecting or data-export platform. The published positioning identifies no verified contact details, export, or API access, and describes the integration scope as narrower than tools with broader platform connections. Signal suits founders who want a free way to find relevant investors, assess fit, map Gmail relationships, and track outreach. Teams that require verified contact information, downloadable records, API access, or integrations beyond Gmail should choose another investor database.
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Signal by NFX pricing
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Signal by NFX fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Investor types | Mixed |
| Investment activity data | Yes |
| Portfolio company data | Yes |
| Contact details | No |
| Data export | Not verified |
| API access | Not verified |
| Data freshness | Live |
| Deployment | Cloud |
| Platforms | Web |
| Compliance & security | SOC 2 |
| Support | |
| Built for | Solo, Small business, Mid-market (editorial estimate) |
| Integrations | 2 integrations: Gmail, Google OAuth |
| Pricing | Free plan (source) |
| Website | signal.nfx.com |
| Facts checked | 20 Sep 2026 |
Signal by NFX integrations
Signal by NFX lists 2 integrations on its own site.
- Gmail
- Google OAuth
Alternatives to Signal by NFX
- PitchBookBroad investor intelligence with live data, analysis, exports, APIs, and CRM connections.9.4
- PreqinA broad private-markets intelligence platform for data-led investment workflows.9.3
- Venture IntelligenceA mature India-focused database for PE/VC transactions, investors and portfolio research.9.1
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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