MERGEHOUND™ vs Sider.
Sider aggregates open-source linters on the PR. MERGEHOUND™ watches every push — OWASP checks, style enforcement, and baseline regressions run continuously, then one end-of-day Slack digest lands in the channel you pick.
Eight dimensions, no hedging.
Review coverage model, OWASP / SAST scans, regression vs team baseline, Slack digest, timezone / leave coverage, GitHub App install scope, pricing, and data handling. The MERGEHOUND™ column is what we ship; the Sider column reflects their public product surface — every Sider cell carries an inline source link so you can verify specifics on their site before you choose.
| Dimension | MERGEHOUND™ | Sider |
|---|---|---|
| Review coverage model | Always-on — watches every push. OWASP checks, style enforcement, and baseline regressions run continuously on every diff, not just on PR open. | Per-PR AI review — fires when a pull request is opened or synchronised. Nothing happens between commits; coverage starts and stops with the PR lifecycle. Source · Sider · features ↗ |
| OWASP / SAST scans | OWASP ASVS-aligned with CWE-tagged inline comments on every diff. Security regressions surface as soon as they land, not after the next PR. Security details → | Bundled open-source linters (ESLint, Pylint, Stylelint, Semgrep and similar) run on the diff at PR open. OWASP ASVS alignment and CWE-tagged inline comments are not surfaced as a headline product. Source · Sider · docs ↗ |
| Regression vs team baseline | Pinned branch baseline — every diff is re-scored against the team baseline you set once (default `main`). A regression returning to HEAD lands a comment naming the original fixing PR. | AI review scores the diff against the current branch state. A pinned branch baseline and a diff-level regression comment that names the original fixing PR is not part of the standard review output. Source · Sider · features ↗ |
| Slack digest | One daily end-of-day rollup to the channel you pick — new regressions, merge-blockers, and stalled PRs in a single thread so standup has the headline. | Per-PR notifications fire to your Slack channel as each review completes. No scheduled daily digest — channel volume scales 1:1 with PR throughput. Source · Sider · docs ↗ |
| Timezone / leave coverage | 24/7 background coverage respects the team's local timezone — no digest is posted on weekends or after 22:00 local, which keeps the daily rollup out of out-of-office windows. | Review-and-notify fires regardless of the reviewer's local time; teams across multiple timezones see continuous activity with no quiet window. Source · Sider · docs ↗ |
| GitHub App install scope | Read PRs + write inline issue comments. Never opens, closes, merges, or rebases anything on its own — the App cannot act on the repo outside its own comment thread. | Standard GitHub App that reads code and posts review comments. Install scope is repo-level by default; organisation-level installation is available for fleet-wide rollouts. Source · Sider · docs ↗ |
| Pricing | Per repository, per month. Squad from $9, Team from $29 — a 2-engineer OSS maintainer pays the same rate as a 50-engineer team. | Per-seat monthly subscription tiers (Free, Pro, Ultra). Cost scales with the number of seats rather than with the number of repos under review. Source · Sider · pricing ↗ |
| Data handling | Diff is processed once for the review and then dropped; nothing trains on your code. SOC2-friendly audit log export on Team and Enterprise — see exactly what was read and when. | Code is processed to power the review; training-on-your-code posture and sub-processors are documented on their privacy page — confirm specifics with Sider before any private-repo install. Source · Sider · privacy ↗ |
Why teams pick always-on over per-PR.
A linter aggregator that fires once, on PR open, has to make every observation at the moment a teammate is least likely to act. A reviewer that runs on every push gets to surface what changed before the next PR even exists.
Bad merges do not wait for the next PR.
Continuous coverage means a regression surfaces a comment before any PR is opened, not after a teammate has already merged it.
One digest, not per-PR noise.
A single Slack rollup beats linter-per-PR pings once the team exceeds a handful of branches.
Pricing doesn't punish headcount.
Per-repo pricing lets a small OSS maintainer and a 50-engineer platform team land on the same product path.
Want the longer read? See the FAQ.
Read the rest of the peer set.
The /vs hub indexes every head-to-head MERGEHOUND™ ships. Pick the one your team is weighing and the matrix reads the same way.