ToolVitals
ActiveOSI-approved OSSDatabaseDatabase SystemsOpen Data StackEvidence Watch

harper

Harper is an open-source Node.js performance platform that unifies database, cache, application, and messaging layers into one in-memory process.

WebsiteGitHubXDiscordChangelog
Data confidence100/100
Source coverage100/100
Publish confidence100/100
Evidence checkedJul 30, 2026

Evidence Watch

ToolVitals has useful public signals for harper, but not enough evidence to publish a strong verdict score yet.

GitHub sourceChangelog/RSS source100/100 data confidence
About this tool

What ToolVitals knows about harper

Harper is an open-source Node.js performance platform that unifies database, cache, application, and messaging layers into one in-memory process.

This tool has an OSI-approved open-source license signal.

Maintenance and shipping signals are strong.

Source-visible projectDatabase SystemsOSI-approved OSSEvidence Watch
Repository

GitHub Activity

JS
HarperFast/harper
Stars81
Forks10
Watchers81
Open Issues683
Primary Language
JavaScript
Last Commit
Today
Releases 90d
30
Default Branch
main
License
Apache-2.0
Repository Status
Active repository
Evidence

Signal Quality

Data Confidence100/100Strong
Source Coverage100/100Strong
Publish Confidence100/100Strong

ConfidenceHigh-confidence score from multiple public signals.

Zombie RiskNo meaningful zombie signal right now.

How ToolVitals scores work
Openness

License Evidence

Class
OSI-approved OSS
License
Apache-2.0

This tool has an OSI-approved open-source license signal.

Sources

Tracked Sources

Websitehttps://harper.fastGitHubHarperFast/harperXhttps://x.com/harper_fastDiscordhttps://discord.gg/VzZuaw3XayChangelog RSShttps://harper.fast/rss.xml
Profile

Classification

Category
Database
Use Case
Database Systems
Openness
OSI-approved OSS
License
Apache-2.0
Tool Mode
Source-visible project
Score Model
Open Source Maintenance
Score Visibility
Evidence Watch
Status
Active
Maintainers

README Badge

Show this ToolVitals status in project docs.

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Latest

Recent Updates

Release Notes

Jul 29, 2026v5.2.0-beta.3Jul 28, 2026v5.1.24Jul 22, 2026v5.2.0-beta.2Jul 22, 2026v5.1.23Jul 17, 2026v5.2.0-beta.1

Product Updates

Jun 1, 2026Introducing Structon: Random-Access Binary Encoding for JavaScript

Blog Posts

Jul 13, 20265 Architectures for Web PersonalizationJul 13, 2026Five Architectures for Web PersonalizationJun 30, 20265x Faster HNSW Vector Search with int8 QuantizationJun 25, 2026Agentic Engineering Needs an Opinion: Why Scale Starts with ArchitectureJun 25, 2026Vercel vs. Harper Benchmark Test

Next decisions

Useful paths from this profile

harper
Dead checkIs harper dead?

Get the direct dead/alive verdict from ToolVitals health, shipping, confidence, and decay signals.

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Compareharper vs redis

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LeaderboardDatabase Systems rankings

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Research mentioning harper
Database SystemsTop 50 Database Systems Tools — June 2026
Tags
databasesqlstorageopen-sourceplatformcachemessagingnodejsperformancein-memoryperformance-platform

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