Online Genealogy Databases: Major Platforms Compared

The landscape of online genealogy databases has expanded dramatically since the mid-1990s, and choosing the right platform can mean the difference between hitting a brick wall and finding the ship manifest that changes everything. This page compares the major platforms — Ancestry, FamilySearch, MyHeritage, Findmypast, and the National Archives catalog — by collection scope, cost structure, and research strengths. Knowing what each database actually holds, rather than what its marketing suggests, is the first step toward using any of them well.

Definition and scope

An online genealogy database is a searchable digital repository of historical records, indexed documents, compiled family trees, or some combination of all three. The distinction matters more than it might seem: a database of scanned images is not the same as a fully indexed database, and a database of user-submitted trees is something else entirely — useful, but carrying a completely different evidentiary weight.

The major platforms divide into two rough categories:

Commercial subscription services — Ancestry.com, MyHeritage, and Findmypast — operate on paid access models and fund large-scale digitization partnerships. Ancestry holds over 40 billion historical records as of its published collection statistics (Ancestry Collection Catalog), making it the largest single commercial repository by record count.

Free public-access services — FamilySearch (operated by The Church of Jesus Christ of Latter-day Saints) and the National Archives catalog (NARA) — provide access without subscription fees, though some FamilySearch records are restricted to in-library access at affiliated Family History Centers.

These platforms are the starting infrastructure for most American research. The genealogy research methods that guide serious practitioners all assume familiarity with at least the free tier of these collections.

How it works

Each platform ingests historical records through one of three pipelines: digitization partnerships with government archives, bulk licensing from county courthouses and churches, or user uploads. The indexed version of any record is only as accurate as the transcription process — and transcription error rates vary considerably.

FamilySearch uses a volunteer indexing model. Volunteers transcribe handwritten records using a double-blind system in which two indexers work independently and a supervisor arbitrates discrepancies. The platform's FamilySearch Indexing program has produced more than 2 billion indexed records through this method.

Ancestry uses a combination of automated optical character recognition (OCR) and human review. OCR performs well on printed records but struggles with 19th-century cursive handwriting — a practical reason why search results for the same individual can differ substantially between platforms covering the same underlying record set.

Once indexed, records become searchable by name, date, location, and relationship fields. Relevance algorithms weight exact-name matches, Soundex phonetic variants, and proximity of dates and places. A search for "Johann Müller" on Ancestry will automatically expand to spelling variants including "Miller," "Muller," and anglicized forms — useful behavior, but one that requires users to evaluate results critically rather than accepting the top match as definitive. The genealogical proof standard exists precisely because automated matching is not the same as proof.

Common scenarios

The platform-to-use question almost always depends on the research problem, not researcher preference.

  1. US federal census research (1790–1950): Ancestry and FamilySearch both hold complete digitized runs of the US Census. FamilySearch provides free access; Ancestry's interface allows faster browsing of household neighbors, which matters when us-census-records strategy requires cluster analysis.

  2. Irish and British Isles research: Findmypast holds the strongest collection of Irish civil registration records, UK census returns, and British newspaper archives. Ancestry's UK holdings are significant but thinner in Irish-specific parish records pre-1900.

  3. German-language records: FamilySearch holds the largest freely accessible collection of German church books, Lutheran and Catholic parish registers, and Prussian civil registration records — a decisive advantage for German-American genealogy reaching back before emigration.

  4. African American research post-1865: Ancestry's partnership with the Freedmen's Bureau produced indexed access to more than 1.8 million records from the Bureau's labor contracts, hospital records, and marriage registers (Freedmen's Bureau Records on Ancestry). FamilySearch holds an overlapping but not identical set.

  5. DNA-linked records: MyHeritage integrates its record collections with its DNA testing service, allowing users to match genetic relatives and immediately search their family trees against shared record hints — a workflow no other major platform replicates as fluidly. See DNA testing for genealogy for context on how record databases and genetic data interact.

Decision boundaries

No single platform covers everything. Serious research typically requires access to at least two, often three.

Platform Strongest suit Cost model
Ancestry.com US records depth, newspaper archives, DNA integration Paid subscription
FamilySearch Free global access, German/Scandinavian records, microfilm digitization Free (some records in-library only)
MyHeritage European records, DNA+tree integration Freemium; paid tier for full access
Findmypast British Isles, Irish civil registration, UK military Paid subscription
NARA (Fold3/Archives.gov) US military records, federal agency records, WWII files Fold3 is paid; Archives.gov free

The /index for this site organizes all major record categories — vital records, military, land, church — so researchers can match record type to the platform most likely to hold it.

For records outside these platforms entirely — local court records, state hospital registers, county deed books — state archives genealogy and local historical societies remain irreplaceable. The big platforms digitize what's been made available to them; the rest requires knowing where the originals sit.

Subscription costs deserve honest accounting. An Ancestry U.S. subscription ran approximately $239/year as of published pricing, while the World subscription reached approximately $399/year — costs that add up quickly when layered with Findmypast and MyHeritage access. FamilySearch remains the essential free baseline for any researcher working across multiple national origins.

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