ember-ecosystem-addons

name	ember-ecosystem-addons
description	Curated picks from emberobserver.com — auth, async, testing, forms/UI, i18n, observability, build & lint. Use when picking an addon, debugging "what does this addon do," or scaffolding a new feature that should reuse community standards.
type	reference

Ember Ecosystem — Top-Rated Addons

Ember's payoff comes from convention and a small set of community addons every serious app uses. Don't reinvent these.

Catalog

Look up a category, then read the matching reference file. Each one has install commands, canonical usage, and notes on when to reach for it vs alternatives.

Category	What's in it	Reference
Authentication	ember-simple-auth, ember-cookies	references/auth.md
Async / orchestration	ember-concurrency	references/async.md
Testing	ember-test-selectors, ember-cli-page-object, ember-cli-mirage, ember-a11y-testing, @percy/ember	references/testing.md
Forms & UI	ember-basic-dropdown, ember-power-{select,calendar,datepicker}, ember-headless-form, ember-changeset(-validations), ember-primitives, ember-truth-helpers, @ember/render-modifiers, ember-modifier, ember-resources, ember-cli-flash, ember-shepherd, ember-page-title, ember-svg-jar	references/forms-and-ui.md
Internationalization	ember-intl	references/i18n.md
Observability	@sentry/ember	references/observability.md
Build & lint	ember-template-lint, @embroider/*, utility addons, dev tooling	references/build-and-lint.md

Choosing well — heuristics

1. Check emberobserver.com: install count, score, last release, TypeScript support. Sub-1k installs and stale releases are red flags.
2. Prefer Mainmatter / NullVoxPopuli / ember-power-addons / ember-modifier / ember-intl–maintained addons — these orgs ship reliably.
3. Beware "Ember 1.x rewrites" — anything written before Octane often relies on classic patterns.
4. Read the README + look at the test suite before installing. Quality of tests = quality of addon.
5. Don't pile on convenience addons — every dep is upgrade weight. If the addon wraps 30 lines, copy the 30 lines.

When NOT to install an addon

• For one-off DOM glue, write a custom modifier (3 lines).
• For one-off transformations, write a helper module.
• For state with no async, just write a class.
• For private API wrappers around getOwner, just call getOwner once.

Verification when adopting a new addon

• Score and install count on emberobserver.com are healthy.
• Last release is within ~12 months (or there's a maintained fork).
• The addon has TypeScript types or Glint signatures.
• You've read the README; you know what one feature you need.
• You've added it to package.json (not duplicated by a transitive dep).

See also

• ember-octane-fundamentals — the patterns these addons assume.
• ember-testing — Mirage / page-object / test-selectors integration.
• ember-services-and-state — ember-concurrency orchestration patterns.
• ember-typescript-and-glint — typing addons that ship Glint signatures.