OpenRecon vs Settler

OpenRecon reconciles transactions from payment processors and gateways against an internal ledger, then reports mismatches and missing transactions. It first pairs records with shared IDs or references; remaining rows are matched by amount, currency, and a date window. Amounts use Python Decimal rather than floating-point arithmetic. Presets cover Stripe, Adyen, PayPal, Razorpay, Braintree, and Square, with column auto-detection or explicit field mapping. The listed input is two CSV files. OpenRecon provides a command-line interface and Python library, with console summaries and optional JSON or CSV reports. Its command line returns a non-zero status when discrepancies exist, supporting scheduled and CI workflows. The maker says it runs locally without network calls, leaving ledger and processor files on the user's computer. Requirements are Python 3.9 or later and no dependencies beyond the standard library. Many-to-one matching, multi-currency settlement, refund and chargeback handling, and HTML reports are listed as planned improvements. The project is free, has no paid tier or account requirement, and uses the MIT license.

Settler is API-first financial reconciliation software that turns transaction flows into repeatable runs, explainable exceptions, and replayable evidence. Its rules-as-code engine applies configurable policies and field-level tolerances so the same inputs produce consistent results. Runs can generate linked-hash manifests, provenance chains, structured evidence, and audit export bundles. Exception records include deterministic context and operator decisions; AI assistance is advisory, with people retaining final authority. Listed adapters include Stripe, PayPal, Square, Shopify, QuickBooks, Xero, NetSuite, SAP, Plaid, TrueLayer, and Chargebee, with 14 more stated on the page. The API supports tenant-scoped runs, evidence retrieval, replay, and health checks. Settler can be self-hosted with Docker Compose or Kubernetes, and its self-hosted mode has no telemetry by default and uses the Apache 2.0 license. Open Source is free and limited to 10,000 monthly reconciliations; Cloud API costs $99 a month and Managed Operations costs $399 a month. Settler says it is not a compliance certification.