Alternatives · Dates & times
Alternatives to org.threeten:threeten-extra on Maven
For parsing, formatting and arithmetic on timestamps. Below are packages that fill the same role — on Maven, and across other ecosystems.
Cross-language equivalents
npm· JavaScript
date-fnsv4.4.0
npmModern JavaScript date utility library
MaintenanceHealthy
PopularityUnknown
SecurityClean
DepsZero deps
Maintained. Maintained, actively maintained.
dayjsv1.11.21
npm2KB immutable date time library alternative to Moment.js with the same modern API
MaintenanceHealthy
PopularityUnknown
SecurityClean
DepsZero deps
Maintained. Maintained, actively maintained.
luxonv3.7.2
npmImmutable date wrapper
MaintenanceAging
PopularityUnknown
SecurityClean
DepsZero deps
Aging — last published 9 months ago — check before adopting.
PyPI· Python
arrowv1.4.0
PyPIBetter dates & times for Python
MaintenanceAging
PopularityUnknown
SecurityClean
DepsHeavy
Aging — last published 7 months ago — check before adopting.
pendulumv3.2.0
PyPIPython datetimes made easy
MaintenanceHealthy
PopularityTop 1%
SecurityClean
DepsLean
Safe default. Widely trusted across the ecosystem, actively maintained.
crates.io· Rust
chronov0.4.44
crates.ioDate and time library for Rust
MaintenanceHealthy
PopularityTop 1%
SecurityClean
DepsZero deps
Safe default. Widely trusted across the ecosystem, actively maintained.
timev0.3.47
crates.ioDate and time library. Fully interoperable with the standard library. Mostly compatible with #![no_std].
MaintenanceHealthy
PopularityTop 1%
SecurityClean
DepsZero deps
Safe default. Widely trusted across the ecosystem, actively maintained.
These suggestions come from a hand-curated concept map of canonical packages per role. They’re intentionally narrow — only widely-adopted packages in each category. Phase 5 will add AI-generated alternatives.