Field Guide · Registry v1

Public-interest platforms that already work, and the mechanism each one runs on.

38 real hubs, help networks, learning archives, environmental trackers, and civic tools. Color codes the mechanism — how each one actually delivers its value — so a scan of the page reads as a taxonomy, not a list.

Mechanism legend

H-01

211.org

Helpline

Free 24/7 helpline + searchable database routing people to local housing, health, and social services across the US & Canada.

Scale
~20M+ contacts/yr
Model
United Way network, county/state funded
Why it works
One phone number to remember, humans on the line, hyper-local database underneath.
Helpline·Help & Nonprofit
H-02

Crisis Text Line

Helpline

Text-based crisis counseling, trained volunteer counselors, data-informed triage.

Scale
Millions of conversations lifetime
Model
Nonprofit, philanthropic + corporate funding
Why it works
Meets people in the channel they already use (text), not a new app to download.
Helpline·Help & Nonprofit
H-03

Idealist.org

Match

Volunteer & nonprofit job matching, absorbed VolunteerMatch in 2024.

Scale
100,000+ live opportunities, ~2M visitors/mo
Model
Nonprofit, job-post + sponsor revenue
Why it works
One search bar, two-sided marketplace, no login wall to browse.
Match·Help & Nonprofit
H-04

Taproot Foundation

Match

Matches nonprofits with skilled pro-bono volunteers (design, legal, marketing, tech).

Scale
500+ live projects at any time
Model
Nonprofit + corporate CSR partnerships
Why it works
Narrow niche (skilled volunteering only) done extremely well beats a general hub.
Match·Help & Nonprofit
H-05

GlobalGiving

Fund

Vetted crowdfunding hub for grassroots nonprofits worldwide.

Scale
$700M+ raised lifetime, 30k+ vetted orgs
Model
Platform fee on donations
Why it works
Vetting process is the actual product — trust is what's being sold, not just a payment button.
Fund·Help & Nonprofit
H-06

DonorsChoose

Fund

Teachers post classroom needs, donors fund the exact request.

Scale
$1B+ funded lifetime
Model
Nonprofit, corporate matching partners
Why it works
Radical specificity — you fund 'this exact box of markers,' not 'education.'
Fund·Help & Nonprofit
H-07

Kiva

Fund

Peer-to-peer microloans to entrepreneurs in underserved economies.

Scale
$2B+ lent lifetime, 96%+ repayment rate
Model
Nonprofit, lender is repaid (loan, not donation)
Why it works
Reframes giving as investing — repeat-lending behavior is much higher than repeat-donating.
Fund·Help & Nonprofit
H-08

Charity Navigator

Rating

Independent ratings of nonprofit financial health & transparency.

Scale
~11M visits/yr, 225k+ orgs rated
Model
Nonprofit, foundation-funded, free to use
Why it works
Becomes the default due-diligence layer other platforms link back to.
Rating·Help & Nonprofit
H-09

Candid (GuideStar + Foundation Center)

Library

Nonprofit data infrastructure — 990s, profiles, funding trends.

Scale
3M+ nonprofit profiles
Model
Nonprofit, data licensing + memberships
Why it works
Infrastructure play — everyone else's transparency page is built on Candid's data.
Library·Help & Nonprofit
H-10

Ushahidi

Data

Open-source crisis-mapping tool, born from 2008 Kenya election violence reporting.

Scale
Deployed in 160+ countries
Model
Nonprofit, open-source + hosted tiers
Why it works
Built for one crisis, generalized into reusable infrastructure other movements now run on.
Data·Help & Nonprofit
E-01

Khan Academy

Library

Free, mastery-based instruction across K-12 and beyond.

Scale
145M+ registered users lifetime
Model
Nonprofit, philanthropy-funded, always free
Why it works
Mastery-based pacing + zero paywall removed the two biggest dropout causes at once.
Library·Education
E-02

MIT OpenCourseWare

Library

Full MIT course materials, free, no login required.

Scale
3,000+ courses published
Model
University-subsidized, donor-funded
Why it works
Radical openness (no signup) built two decades of institutional trust.
Library·Education
E-03

Wikipedia

Library

Crowd-edited encyclopedia governed by a neutral-point-of-view policy.

Scale
~1.5B unique devices/mo (Wikimedia)
Model
Nonprofit, small-donor funded, no ads
Why it works
The NPOV policy is enforced by community process, not a single editorial voice — that's what makes it trusted at scale.
Library·Education
E-04

OpenStax

Library

Free, peer-reviewed college textbooks (Rice University).

Scale
Used by ~50% of US colleges
Model
University + philanthropic funding
Why it works
Textbook cost was the barrier; removing it was the entire strategy.
Library·Education
E-05

Project Gutenberg

Library

70,000+ free public-domain ebooks.

Scale
70k+ titles, decades of volunteer digitizing
Model
All-volunteer, donation-supported
Why it works
Oldest digital library still running — proof a volunteer-only model can last 50+ years.
Library·Education
E-06

Internet Archive

Library

Free digital library + the Wayback Machine.

Scale
Billions of archived web pages
Model
Nonprofit, donations + library partnerships
Why it works
Became civic infrastructure by accident — journalists and courts now cite it as a record of truth.
Library·Education
E-07

TED-Ed

Library

Short, animated lessons built around expert talks.

Scale
Billions of views across platforms
Model
Nonprofit, sponsorship + licensing
Why it works
Format discipline — every lesson is the same length and shape, which built binge-ability.
Library·Education
E-08

freeCodeCamp

Library

Free coding curriculum, community-run, project-based certification.

Scale
400M+ people reached
Model
100% donation-funded nonprofit, no ads
Why it works
Ships a certificate people can put on a resume — free education with a real-world payoff attached.
Library·Education
E-09

Duolingo

Library

Free language learning with gamified streaks.

Scale
~100M+ monthly active users
Model
Freemium + ads, some subscription
Why it works
Habit-loop design (streaks, notifications) drives retention harder than content quality alone.
Library·Education
V-01

NASA Climate (climate.nasa.gov)

Data

Government hub for climate data, visualizations, and vital signs.

Scale
Public data, agency-backed authority
Model
Federally funded
Why it works
Its credibility comes entirely from being the primary source, not a summarizer of one.
Data·Environmental
V-02

NOAA Climate.gov

Data

Public climate & weather data and explainers.

Scale
Public data
Model
Federally funded
Why it works
Same primary-source trust model as NASA — raw data plus plain-language explainers side by side.
Data·Environmental
V-03

iNaturalist

Data

Citizen-science species ID platform (Nat Geo + Cal Academy of Sciences).

Scale
~200M+ observations logged
Model
Nonprofit, joint institutional backing
Why it works
Turns individual curiosity into usable scientific data — the user gets value (an ID) the moment they contribute.
Data·Environmental
V-04

eBird

Data

Global citizen-science bird sightings database (Cornell Lab).

Scale
1B+ bird observations logged
Model
University-run, grant-funded
Why it works
20 years of consistent data structure made it the dataset researchers default to.
Data·Environmental
V-05

Project Drawdown

Rating

Ranks and tracks real-world climate solutions by measured impact.

Scale
Reference cited across policy & media
Model
Research nonprofit, philanthropy-funded
Why it works
Refuses doom framing — every entry is a solution ranked by evidence, which is rarer than it should be.
Rating·Environmental
V-06

Global Forest Watch (WRI)

Data

Real-time satellite deforestation tracking, fully open data.

Scale
Monitors forest change worldwide
Model
Nonprofit (World Resources Institute), grant-funded
Why it works
Satellite data plus open API meant journalists and local activists could build their own tools on top.
Data·Environmental
V-07

350.org

Signal

Grassroots global climate action network, locally organized.

Scale
Active in 188 countries
Model
Nonprofit, member/donor funded
Why it works
Deliberately decentralized — local chapters run their own campaigns under one shared banner.
Signal·Environmental
V-08

Environmental Defense Fund

Signal

Science-based environmental advocacy and litigation.

Scale
Major US environmental nonprofit
Model
Nonprofit, member-funded
Why it works
Leads with peer-reviewed science before policy asks — credibility-first advocacy.
Signal·Environmental
V-09

Climate Central

Signal

Nonprofit science journalism translating climate data for the public.

Scale
Content syndicated to hundreds of newsrooms
Model
Nonprofit, grant-funded
Why it works
Doesn't publish its own outlet — it feeds vetted, plain-language data to existing news orgs.
Signal·Environmental
C-01

Ballotpedia

Library

Nonpartisan encyclopedia of American elections, politicians, and policy.

Scale
600k+ articles
Model
Nonprofit, donor-funded, no ads
Why it works
Strict sourcing rules and no editorializing are the entire brand promise.
Library·Public & Civic
C-02

AllSides

Rating

Rates news source bias and shows the same story from left/center/right.

Scale
Bias ratings on 1,400+ outlets
Model
B-corp + nonprofit arm, subscriptions
Why it works
Doesn't tell you what's true — shows you the spread of framing, and lets you triangulate.
Rating·Public & Civic
C-03

Ground News

Rating

Compares how outlets across the spectrum cover the same story, flags 'blindspots.'

Scale
Millions of app users
Model
Freemium subscription
Why it works
The 'blindspot' feature turns media literacy into a single glanceable visual.
Rating·Public & Civic
C-04

FactCheck.org

Rating

Nonpartisan fact-checking of political claims (Annenberg Public Policy Center).

Scale
Cited widely by major outlets
Model
University-affiliated nonprofit
Why it works
University affiliation gives it a credibility floor that outlasts any single news cycle.
Rating·Public & Civic
C-05

PolitiFact

Rating

Fact-checking with the well-known Truth-O-Meter rating system.

Scale
Pulitzer Prize-winning, Poynter-owned
Model
Nonprofit (Poynter Institute)
Why it works
The rating scale itself became a shareable, meme-able unit of trust.
Rating·Public & Civic
C-06

ProPublica

Signal

Nonprofit investigative journalism, free to republish under Creative Commons.

Scale
Multiple Pulitzers
Model
Nonprofit, philanthropy-funded
Why it works
Gives away its biggest investigations for free republishing — reach over ownership.
Signal·Public & Civic
C-07

The Conversation

Signal

News analysis written by academics, edited by journalists, free under CC license.

Scale
40M+ readers/mo across syndication
Model
Nonprofit, university + foundation funded
Why it works
Source credibility (real researchers) plus free syndication multiplies reach far past its own site.
Signal·Public & Civic
C-08

Consumer Reports

Rating

Independent product testing and ratings, accepts no advertising.

Scale
~6M subscribing members
Model
Nonprofit, subscription-funded, zero ads
Why it works
Refusing ad revenue is the whole trust mechanism — nothing to be captured by.
Rating·Public & Civic
C-09

USAFacts

Library

Makes US government data (spending, population, health) searchable in plain language.

Scale
Founded by Steve Ballmer, widely cited
Model
Nonprofit, philanthropy-funded
Why it works
Only uses government sources, no interpretation — 'just the numbers' as a positioning strategy.
Library·Public & Civic
C-10

Snopes

Rating

Long-running fact-checking of viral claims, rumors, and misinformation.

Scale
One of the oldest fact-check sites (est. 1994)
Model
Independent, ad + membership funded
Why it works
Longevity itself became the credibility signal — outlasted most of the platforms it fact-checks.
Rating·Public & Civic

Build plan · Team size by stage

  1. Stage 01

    Quiet MVP

    Months 0–3

    Rowan + 1 full-stack builder + 1 content/voice lead

    This is the Lovable/React-prototype phase. No PR, no launch. Build with Rowan's own material as seed content and test with a trusted, invite-only circle of 10–30 people.

  2. Stage 02

    Soft community

    Months 3–9

    + 1 community moderator, part-time

    Turn on exactly one feedback loop — comments, submissions, or a request form. Write down the sourcing/neutrality policy now, publicly, even while small. Credibility compounds from day one, not at scale.

  3. Stage 03

    Selective visibility

    Months 9–18

    + 1 data/backend engineer, + grant writer (fractional)

    Seed to 3–5 aligned partner orgs or newsletters rather than paid ads. Apply for nonprofit tooling discounts (TechSoup) once there's a legal entity. Growth stays referral-shaped, not campaign-shaped.

  4. Stage 04

    Institutional scale

    18mo+

    Small paid core (5–12) + a much larger volunteer/contributor layer

    This is the Wikipedia / ProPublica / Khan Academy pattern: the paid team stays lean and the credibility + content volume comes from a wide, well-governed contributor base.