Eigenmath
github.comSymbolic calculation through a compact command interface
Symbolic calculation through a compact command interface
Fluid-flow calculators for pipes, valves and measurements
Weather quantities with linked formulas
RF coil, antenna and related engineering calculations
Practical telescope and observing calculations
Formula-driven apps built from spreadsheet-style logic
Ontario member banking with payment schedules and pending-transfer controls
Personnel administration with scoped permissions and employee setup controls
Open-source shared expense groups without a required account
A setlist planner and personal songbook
An Oman wallet for everyday bills, transfers and prepaid spending
Accounts with Spaces for budgets and recurring bills
Multi-currency business accounts with cards, bills and spending approvals
Canadian mobile banking with cheque deposits and eligible free accounts
A project time tracker for freelancers and teams that bill client work by the hour.
Bangladesh bank transfers, bills and card controls through UCB One
Message-based expense tracking with categories, budgets and manual corrections
Digital business banking with scheduled payments and cash-flow controls
Telescope and camera calculations for observing setups
Airfoil comparison, plotting and geometry calculations
Geometry and structural formulas with dedicated inputs
Plan cash around invoice dates, bills and alternative scenarios
Member banking with scheduled bills and a seven-year statement archive
HR approvals with conditional routes and timing for each workflow step