Firestore vs MongoDB:Which is more popular?
In September 2026, MongoDB had more branded searches than Firestore among document databases worldwide. MongoDB had about 673,000 branded searches, while Firestore had 49,500. MongoDB made up 88.9% of all document database searches we track, and Firestore accounted for 6.5%. When we asked ChatGPT and Google AI Overviews about document databases, MongoDB appeared in all five answers and Firestore in three. MongoDB was mentioned before Firestore in every answer.
Who do people search for more?
MongoDB, about 14 searches for every 1 for Firestore
Who does AI mention more?
MongoDB, mentioned in every answer we collected
Who does AI recommend more?
MongoDB, named ahead of Firestore in every answer
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Top document databases in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, MongoDB appeared in all five answers. Firestore was mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. MongoDB was listed before Firestore in every answer.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
- MongoDB1st
Amazon DynamoDB2nd
Couchbase3rd
Firestore4th
Azure Cosmos DB5th
CouchDB6th
RavenDB7th
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- MongoDB5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Couchbase4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Amazon DynamoDB4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Firestore3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- CouchDB2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Azure Cosmos DB2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- RavenDB1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about document databases
5 answers
Asked ChatGPT
“Which document database should I use?”
Asked ChatGPT
“What are the best document databases?”
Asked ChatGPT
“What's the best document database for app data?”
Searched Google, AI Overview
“document databases”
Searched Google, AI Overview
“nosql document database”
Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.
Is Firestore or MongoDB more popular in search?
This chart shows how often people search Google for Firestore and MongoDB by name. Each line represents a brand's share of searches for all seven document databases we track, month by month, from English-language searches worldwide.
Share of searches by month for MongoDB, Firestore. The figures are in the table below the chart.
View monthly share of searches table
| Month | MongoDB | Firestore | Couchbase | CouchDB | Azure Cosmos DB | Amazon DynamoDB | RavenDB |
|---|---|---|---|---|---|---|---|
| Oct 2025 | 86.1% | 6.3% | 1.9% | 1.5% | 1% | 2.8% | 0.25% |
| Nov 2025 | 88% | 6.5% | 1.6% | 1.3% | 1.1% | 1.3% | 0.26% |
| Dec 2025 | 87.7% | 6.4% | 1.9% | 1.6% | 1.1% | 1.1% | 0.25% |
| Jan 2026 | 87.5% | 6.4% | 1.9% | 1.6% | 1.3% | 1.1% | 0.25% |
| Feb 2026 | 87.5% | 6.4% | 1.9% | 1.6% | 1.3% | 1.1% | 0.25% |
| Mar 2026 | 88.5% | 6.5% | 1.6% | 1.3% | 1.1% | 0.87% | 0.2% |
| Apr 2026 | 89.1% | 6.5% | 1.3% | 1.3% | 0.88% | 0.71% | 0.17% |
| May 2026 | 87.5% | 7.9% | 1.6% | 1.3% | 0.86% | 0.7% | 0.21% |
| Jun 2026 | 87.7% | 7.9% | 1.6% | 1.3% | 0.86% | 0.57% | 0.17% |
| Jul 2026 | 88.8% | 6.5% | 2% | 1.1% | 0.87% | 0.48% | 0.25% |
| Aug 2026 | 86.9% | 7.8% | 1.9% | 1.6% | 0.85% | 0.7% | 0.25% |
| Sep 2026 | 88.9% | 6.5% | 1.6% | 1.3% | 0.87% | 0.58% | 0.21% |
How has the Firestore and MongoDB comparison changed over the last 12 months?
3 findings
- MongoDB was ahead of Firestore in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Firestore’s share of searches among document databases worldwide moved from 6.3% to 6.5%, and its estimated monthly branded searches moved from 60.5K to 49.5K.
- Across the 12 months ending September 2026, MongoDB’s share of searches among document databases worldwide moved from 86.1% to 88.9%, and its estimated monthly branded searches moved from 823K to 673K.
How did search popularity change for document databases worldwide in September 2026?
2 changes
In September 2026, MongoDB gained share of searches among document databases worldwide, from 86.9% to 88.9%.
In September 2026, Firestore lost share of searches among document databases worldwide, from 7.8% to 6.5%.
How are branded searches counted?
2 search terms
Brandwave collects information about searches that people make online using Firestore’s and MongoDB’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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