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hyperswitch vs stalwart

hyperswitch and stalwart share 10 technologies: rdkafka, Redis, Kafka, Tokio, jsonwebtoken, argon2, hkdf, totp-rs, quick-xml, and infer. Both are written in Rust.

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What they share and what sets them apart

juspay

hyperswitch

Open source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, fraud, vault and tokenization providers | Uplifts authorization with intelligent routing and revenue recovery | Reduce payment processing costs with cost observability | Reduces payment ops with reconciliation

Rust45.7kRead on November 6, 2026, at commit 0446d56What is hyperswitch built with?

Only in hyperswitch

In common

stalwartlabs

stalwart

All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

Rust15.8kRead on November 7, 2026, at commit 8b32686What is stalwart built with?

Only in stalwart

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
hyperswitch1,412,558 lines written2,133 code files
stalwart637,196 lines written1,585 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
hyperswitch3.3% of its commits signed by AIWith Claude Code and GitHub Copilot
stalwart0% of its commits signed by AI
ActivityFrom GitHub and its history, on the day SeeRepo read it.
hyperswitchLast push November 6, 20268,315 commits45,715 stars
stalwartLast push November 4, 20261,836 commits15,779 stars
TestsThe files that test the code, and the share of code files a test imports.
hyperswitch2,624 test files0.7% of its code files have a test that imports them
stalwart38 test files1.4% of its code files have a test that imports them

Frequently asked questions

Which is bigger, hyperswitch or stalwart?
hyperswitch, with 1,412,558 lines written; stalwart has 637,196.

The proof: juspay/hyperswitch's code at commit 0446d56

Which has more GitHub stars, hyperswitch or stalwart?
hyperswitch, with 45,715 stars; stalwart has 15,779.

The proof: juspay/hyperswitch on GitHub

Which has more tests, hyperswitch or stalwart?
hyperswitch, with 2,624 test files; stalwart has 38.

The proof: juspay/hyperswitch's code at commit 0446d56

Which was updated more recently, hyperswitch or stalwart?
hyperswitch: its last push was on November 6, 2026, and stalwart's on November 4, 2026.

The proof: juspay/hyperswitch's commits on GitHub

Which has more commits signed by AI, hyperswitch or stalwart?
hyperswitch: an AI signed 3.3% of its commits, with Claude Code and GitHub Copilot.

The proof: the commits each tool signed in juspay/hyperswitch

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