Comparison

Prometheus vs QuestDB

On the evidence we track, Prometheus leads this comparison with a composite score of 69/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Prometheus69
QuestDB50
Score
Vioscale score
Prometheus69 / 100medium · 58%
QuestDB50 / 100medium · 65%
Pricing
Free tier
Prometheus
QuestDB
Model
Prometheusopen_source
QuestDBcommercial
Price level
Prometheusfree
QuestDBlow
Transparent
Prometheus
QuestDB
Integrations
Count
Prometheus18
QuestDB10
Reliability
Sla pct
Prometheus
QuestDB99.9
Adoption
Dependent repos
Prometheus5,467
QuestDB106
Github stars
Prometheus65,837
QuestDB17,279
Package downloads weekly
Prometheus9,036,061
QuestDB
Activity
Commits last 30d
Prometheus100
QuestDB64
Release
Cadence days
Prometheus6
QuestDB16
History
Prometheus20 items
QuestDB20 items
License
Spdx
PrometheusApache-2.0
QuestDBApache-2.0
Language
Primary
PrometheusGo
QuestDBJava

Capabilities

Feature-by-feature on the axes that matter for time-series databases. “-” means undocumented, not absent.

Query
Query language (SQL / PromQL / InfluxQL-Flux / Graphite)
PrometheusPromQL
QuestDBSQL with time-series extensions (SAMPLE BY, ASOF, HORIZON JOIN, N-dimensional ar
SQL compatibility
PrometheusNon-SQL
QuestDBFull SQL
Ingest
Ingest model
PrometheusBoth
QuestDBPush
Model
Data model
PrometheusMetrics (labels/tags)
QuestDBWide events
Lifecycle
Downsampling / rollups
Prometheus-
QuestDBContinuous aggregates
Retention / TTL
Prometheus-
QuestDB-
Storage
Compression (columnar / delta / Gorilla)
Prometheus-
QuestDBcolumnar with frame compression
Performance
High-cardinality handling
PrometheusStrong
QuestDBStrong
Scale
Clustering / horizontal scale
PrometheusDistributed / sharded
QuestDBDistributed / sharded
Replication / HA
Prometheus
QuestDB
Deployment
Deployment
PrometheusSelf-hosted
QuestDBSelf-hosted
Interop
Prometheus remote-write compatible
Prometheus
QuestDB-
Licensing
Licence class
PrometheusPermissive OSS
QuestDBPermissive OSS

What each one is

The product in its own terms, so the numbers below have context.

Prometheus

Leader

A systems monitoring platform that collects metrics from configured targets at regular intervals, evaluates alert rules using PromQL, and triggers notifications. It uses a dimensional data model with key-value labels for flexible metric analysis and dashboarding.

Independently observed

QuestDB

QuestDB is an open-source time-series database engineered for low latency, delivering ultra-low latency ingestion, high throughput, and multi-tier storage for demanding time-series workloads.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Prometheus

Leader
Open sourceFree tier
as of verify ↗

QuestDB

HybridFree tier

Open-source Apache 2.0 free tier; QuestDB Cloud and Enterprise plans available via contact/quote

as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Prometheus
QuestDB
macOS
Prometheus
QuestDB
Windows
Prometheus
QuestDB
Linux
Prometheus
QuestDB
CLI
Prometheus
QuestDB
Deployment
Cloud / SaaS
Prometheus
QuestDB
Self-hosted
Prometheus
QuestDB
On-premise
Prometheus
QuestDB

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Prometheus

Leader
17 total
  • Amazon SNS
  • Discord
  • incident.io
  • Jira
  • Mattermost
  • Microsoft Teams
  • OpsGenie
  • PagerDuty
  • Pushover
  • Rocket.Chat
  • Slack
  • Telegram
  • VictorOps
  • Webex
  • WeChat
  • Webhook
  • Email
Independently observed

QuestDB

10 total
  • PostgreSQL
  • Parquet
  • Arrow
  • Polars
  • Pandas
  • Debezium
  • Iceberg
  • MySQL
  • MongoDB
  • Cassandra
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.