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RFC 8785 JSON Canonicalization Scheme (JCS) for .NET. Deterministic JSON serialization for hashing and signing: webhook signature verification, JWS/JWT payloads, verifiable credentials, audit trails. Zero... More information

Realistic password strength estimation for .NET: a faithful, modern port of the zxcvbn-ts (Dropbox zxcvbn) algorithm. Instead of composition rules (uppercase + digit + symbol), Zxcvbn scores what attackers... More information

SWIFT MT940 and MT942 bank statement parser for .NET. Parses end-of-day customer statements and intraday transaction reports into typed statements, balances, and statement lines: full :61: decomposition (value... More information

JSON that comes out of an LLM: extract it from prose, repair it, and parse it while it streams. Partial parsing of truncated JSON with npm partial-json semantics, live typed snapshots from any token stream... More information

Fast fuzzy string matching and best-match extraction with rapidfuzz semantics: the Fuzz.Ratio/PartialRatio/token/WRatio scorer family, Levenshtein, Indel, Jaro-Winkler, Hamming and LCS distance kernels,... More information

Zero-dependency ISO 20022 bank statement parser for .NET. Parses camt.053 (statement), camt.052 (intraday report) and camt.054 (debit/credit notification) XML into a typed, ergonomic object model,... More information

Fixed-width and positional flat-file parsing and writing for .NET: the bank-file and mainframe formats that CSV libraries cannot touch. Attribute or fluent schemas, implied decimals as decimal ("0000012345"... More information

Sanctions name-screening for .NET against the OFAC SDN, OFAC Consolidated (non-SDN), UN Security Council and EU consolidated financial sanctions lists. Zero external dependencies, offline-capable, composable... More information

URL normalization for .NET. Canonicalize URLs for equality checks, deduplication and cache keys with configurable, safe-by-default transforms. Zero external dependencies.

Time-value-of-money and cashflow math for .NET: PV, FV, PMT, IPMT, PPMT, RATE, NPER, NPV, IRR, MIRR, date-aware XNPV/XIRR and loan amortization schedules. Zero dependencies, decimal-precise money output.

Dashboards as code for .NET: derive Grafana dashboards and Prometheus alert rules from the System.Diagnostics.Metrics instruments your app already defines. MeterScan captures instrument name, kind, unit and... More information

Maintained, tested, zero-dependency ISO 20022 SEPA payment-initiation library for .NET. Reads and writes both pain.001.001.09 (customer credit transfer) and pain.008.001.08 (customer direct debit), and... More information

Detects and repairs mojibake: text garbled by an encoding mistake, such as "cafe" arriving as "cafA(c)" or an apostrophe turning into a three-character sequence. A focused .NET port of the core of Python's ftfy... More information

Validate EU and UK VAT registration numbers offline: per-country format and check-digit verification without calling VIES. Zero dependencies, ISO 7064 and Luhn checksums for the countries that define them.

Cross-platform filename and path validation and sanitization for .NET: the pathvalidate for .NET. Turn any user-supplied name into a safe filename that will not break, overwrite, or open a path-traversal hole.... More information

Structured concurrency primitives for .NET, mirroring Go's golang.org/x/sync: TaskGroup (errgroup semantics: heterogeneous spawn, first error cancels siblings via a linked token, aggregate at join,... More information

Zero-dependency BAI2 (Bank Administration Institute version 2) cash-management and lockbox statement parser for .NET. Parses into a typed model with headline control-total reconciliation, DateOnly dates, and... More information

Rule-based financial reconciliation engine for .NET. Match your ledger against processor settlement files, bank statements against internal books, invoices against payments: exact composite keys, amount... More information

Deterministic PII detection and redaction for text leaving your perimeter: LLM prompts, logs, support tickets, exports. Finds and redacts emails, phone numbers, payment cards with Luhn validation and network... More information

Focused, zero-dependency RFC 5545 RRULE expander. Turns a recurrence rule string plus a start date into occurrence dates for billing cycles, dunning schedules, subscription renewals and reminders, without... More information