Rectify (formerly Replicate So) vs Sixth

Rectify gives SaaS founders one developer-focused workspace to catch bugs, replay user sessions, monitor uptime, and run support without switching between a dozen tools. The product rebranded from Replicate and now centers on Quanta, an operations agent you steer through conversation rather than dashboards.

Most bug trackers make you configure filters and query builders before you see anything useful. Rectify flips that: you ask Quanta to surface rage-click sessions, draft changelogs from commits, or triage inbox patterns in plain English. The Chrome extension fits teams shipping with Cursor, Lovable, Bolt, Replit, or v0, capturing annotated screenshots, Loom clips, console logs, and network data with each report.

The stack covers monitoring across HTTP, HTTPS, TCP, DNS, and ICMP, on-demand GitHub code scans with file-level findings, roadmaps, changelogs, workflows, and an MCP server that links Claude or Cursor to your scan and feedback data. The site lists 100+ integrations and powers more than 1,000 products.

Pricing uses bring-your-own-key AI: connect OpenAI, Claude, Gemini, Deepseek, or Open Router with zero markup. Paid plans from $29 per month include a 14-day trial with no credit card, and an Idea tier stays free for solo builders.

Sixth is a developer-focused coding agent that plans, writes, and debugs software inside your editor and through chat. It ships as a web app and a Visual Studio Code extension, and it routes work across frontier models from Anthropic, Google, and OpenAI instead of locking you to one provider.

Where many assistants jump straight to autocomplete, Sixth emphasizes orchestration. Deep Planning Mode drafts a step-by-step strategy before code changes, sub-agents run research and validation in parallel, and Telegram remote control lets you approve tasks from a phone. Paid tiers add MCP server access, with Pro+ listing more than 1,000 integrations.

Individual developers can start on the free tier with monthly agent and completion limits. Pro, Pro+, Ultra, and Teams plans raise usage caps, model access, and support levels, while the Enterprise page adds SOC 2 Type II compliance, SSO, and optional private deployment for regulated teams.