OpenSwap

Firebase alternatives

3 projects that cover part or all of what Firebase does. 3 of them have an open-source core; 0 are source-available; 0 need a human license read.

Pl. 01
OPEN SOURCE

Appwrite

replaces Firebase

BSD-3-Clause (OSI-approved, whole repository)

★ 58k●●●●●push 2026-11-10

Pl. 02
OPEN SOURCE

PocketBase

replaces Firebase

MIT (OSI-approved, whole repository)

★ 62kunratedpush 2026-10-26

Pl. 03
OPEN SOURCE

Supabase

replaces Firebase

Apache-2.0 (OSI-approved, whole repository)

★ 115k●●●●●push 2026-11-10

What does it cost?

Firebase price: No per-seat price (Blaze). Spark free; Blaze pay-as-you-go with $0 base fee and metered usage. No per-seat price. Source: vendor pricing page, checked 2026-11-10. Vendor site: Firebase site. Put your plan's price into the estimator below if it differs.

Example values: replace every number with your own. None of them is vendor data.

Self-hosting costs about $1,620 a year more for 20 seats: SaaS $2,400 vs self-host $4,020 (server $144, backups $36, admin time $3,840). Break-even at about 34 seats at these numbers.

Functions differ: an open-source tool rarely matches every Firebase feature. Self-hosting means you handle updates, backups and security. Sponsored plate: none yet. Advertise.