Open Source Alternatives
  • Alternatives
  • Categories
    Categories by size882 projects
    • Developer Tools461
    • AI & Machine Learning404
    • Web Development196
    • Business & Productivity191
    • Communication & Collaboration126
    • Security & Monitoring126
    • IT Management123
    • Product & Project Management106
    • Cloud & Hosting105
    • Data & Analytics104
    Browse all 21 categoriesLLMOps & AI Tooling, Design & Creative and 9 more
  • Blog
  • Advertise
SearchNotion, Slack, password manager.../
Submit
Open Source Alternatives
  • Alternatives
    • Developer Tools461
    • AI & Machine Learning404
    • Web Development196
    • Business & Productivity191
    • Communication & Collaboration126
    • Security & Monitoring126
    • Browse all 21 categories
  • Blog
  • Advertise
Submit your project

New open source projects by email

The projects we add and every new guide. Free, unsubscribe any time.

Open Source Alternatives LogoOpen Source Alternatives

Handpicked Open Source Alternatives to Paid Softwares

Product

  • Categories
  • Tag
  • Advertise

Resources

  • Blog
  • Collection
  • Submit

Company

  • Privacy Policy
  • Terms of Service
  • Refund Policy
  • Sitemap

Alternatives

  • Claude Code
  • Jira
  • Notion
  • Slack
  • Linear
  • Wispr Flow
  • All alternatives
© 2026 Open Source Alternatives. All rights reserved.
Open SourceAlternatives
Home/Categories/Databases & Storage/QuestDB
icon of QuestDB

QuestDB

Open source alternative to InfluxDB Cloud, Amazon Timestream and Timescale Cloud

  • 17.5K stars
  • Apache-2.0
  • Active this week
  • Last commit 1 day ago

Last verified Oct 20, 2026

Query time-series data with low-latency SQL in an Apache-2.0 database built for market, observability, and industrial workloads.

Visit websiteGitHub17.5K starsDeploy on Hostinger
image of QuestDB
TL;DR

QuestDB is an Apache-2.0 time series database built for high-ingest analytics on timestamped data. It replaces managed time series databases like Amazon Timestream or InfluxDB Cloud when teams need SQL, fast ingestion, and self-hosted control for market, IoT, or observability data.

Read the full breakdownHide the full breakdownWho it is for, how it works, trade-offs and the FAQ
who it's for

Who QuestDB is for#

Fintech teams storing market data

Use QuestDB for tick, quote, trade, and pricing data that needs fast ingestion and time-window analysis.

Skip if:

Skip if the workload is mostly transactional account data.

IoT teams analyzing sensor streams

QuestDB fits high-volume timestamped readings where SQL access and self-hosting matter.

Skip if:

Skip if you need a managed device platform rather than a database.

the problem

The problem it solves#

Time series workloads can overwhelm general-purpose databases when ingestion rates are high and queries scan large date ranges. Managed time series products reduce setup work, but they add vendor pricing, retention constraints, and migration concerns.

Teams working with market data, IoT readings, or infrastructure measurements need a database that ingests quickly, queries with familiar SQL, and can run on infrastructure they control.

how QuestDB solves it

How it solves it#

High-speed time series ingestion

Targets append-heavy timestamped data workloads such as market ticks, sensor events, and operational measurements.

SQL query interface

Lets analysts and developers query time series data with SQL instead of learning a niche query language first.

Self-hosted and cloud options

Teams can run QuestDB themselves or use the managed service, which supports migration from prototype to production operations.

strengths · trade-offs

Strengths and trade-offs#

Strengths

  • Strong fit for financial and IoT dataQuestDB is purpose-built for timestamped datasets where ingestion speed and time-window queries matter.
  • Apache-2.0 open source coreThe license gives teams a self-hosted path without committing all time series data to a managed service.

Trade-offs

  • -Specialized database choiceQuestDB is not a general application database. Teams still need PostgreSQL, MySQL, or another transactional store for normal app data.
versus alternatives

QuestDB vs alternatives#

QuestDB vs Amazon Timestream

QuestDB and Amazon Timestream both target time series workloads. QuestDB is an open source SQL database with self-hosting and cloud options; Timestream is a managed AWS service.

QuestDB is better when SQL familiarity, self-hosting, or cloud portability matters. Timestream is still better when the workload is already fully on AWS and the team wants AWS to operate the database.

tech stack · detected from GitHub

What it's built on#

Languages
C++JavaRust
Databases
PostgreSQL
frequently asked

FAQ#

Is QuestDB open source?

Yes. QuestDB is open source under the Apache-2.0 license.

What is QuestDB used for?

QuestDB is used for high-ingest time series data such as financial market data, IoT sensor data, and observability measurements.

How does QuestDB compare to Amazon Timestream?

Amazon Timestream is a managed AWS time series database. QuestDB gives teams an open source SQL database they can self-host or use as a managed service.

also worth a look

Similar open-source tools#

TDengine

Alternative toInfluxDB Cloud

High-performance time-series database for IoT and telemetry

  • 25,171 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

InfluxDB

Alternative toAmazon Timestream

High-performance time series database with SQL-based querying

  • 31,771 GitHub stars
  • Apache-2.0Licence Apache-2.0

VictoriaMetrics

Alternative toGrafana Cloud

High-performance self-hosted time series database and metrics

  • 17,887 GitHub stars
  • Apache-2.0Licence Apache-2.0

Chat2DB

Alternative toDataGrip

AI text-to-SQL client for 40+ databases; local-first, self-hosted

  • 28,327 GitHub stars
  • CustomLicence Apache-2.0 with additional commercial restrictions (LicenseRef-Chat2DB)

Duckle

Alternative toFivetran

Self-hosted ETL on DuckDB with 385 connectors and no per-row billing.

  • 1,517 GitHub stars
  • Apache-2.0Licence Apache-2.0

libredb-studio

Alternative toDataGrip

One browser tab for 18 database engines, deployed beside your data

  • 1,234 GitHub stars
  • MITLicence MIT
by category

Open source tools in these categories#

61

Databases & Storage

Immich, Supabase, Redis
104

Data & Analytics

Firecrawl, ragflow, Worldmonitor
29

Finance & Fintech

TradingAgents, MiroFish, OpenBB
Hostinger

Run QuestDB on your own server

Self-host QuestDB on a Hostinger VPS.

Deploy on Hostinger

Featured

rakazo

Alternative toGrok Bot

AI teammates you own: your keys, your model, your machine.

  • 4,904 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #AI Agents

Omnara

Alternative toCClaude Managed Agents

Open-source agent deployment API. Self-host or use Omnara Cloud.

  • 2,957 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #AI Agents

Inbox Zero

Alternative toSuperhuman

AI email assistant that drafts replies and clears your inbox

  • 12,712 GitHub stars
  • AGPL-3.0Licence AGPL-3.0
  • #Email
Feature your project

New open source projects by email

The projects we add and every new guide. Free, unsubscribe any time.

Find open source alternatives to paid software

/
  • Claude Code to OpenCode
  • Jira to Windshift
  • Notion to AppFlowy
  • Slack to Mattermost
  • Linear to GitLab
  • Wispr Flow to Handy
  • CapCut to Concat
  • Grok Bot to rakazo
  • Superhuman to Inbox Zero
  • Airtable to AITable
  • Muse to OpenClaw
  • GitHub Copilot to Cline
  • Datadog to Netdata
  • Microsoft Teams to Rocket.Chat
  • Pinecone to Qdrant
  • Zapier to n8n
  • Devin AI to OpenHands
  • Firebase to Supabase
  • 1Password to KeePassXC
  • Confluence to Docmost
  • Contentful to Strapi
  • Adobe Premiere Pro to Shotcut
  • ChatGPT to AnythingLLM
  • LangSmith to Langfuse
  • Claude Code to OpenCode
  • Jira to Windshift
  • Notion to AppFlowy
  • Slack to Mattermost
  • Linear to GitLab
  • Wispr Flow to Handy
  • CapCut to Concat
  • Grok Bot to rakazo
  • Superhuman to Inbox Zero
  • Airtable to AITable
  • Muse to OpenClaw
  • GitHub Copilot to Cline
  • Datadog to Netdata
  • Microsoft Teams to Rocket.Chat
  • Pinecone to Qdrant
  • Zapier to n8n
  • Devin AI to OpenHands
  • Firebase to Supabase
  • 1Password to KeePassXC
  • Confluence to Docmost
  • Contentful to Strapi
  • Adobe Premiere Pro to Shotcut
  • ChatGPT to AnythingLLM
  • LangSmith to Langfuse