About MW SysArc

The executable knowledge platform built by Harald Angell.

MW SysArc Tools was created by Harald Angell, founder of MW SysArc. What began as a practical collection of browser calculators has become an executable knowledge platform spanning mathematics, economics, finance, accounting, business, computing and everyday utilities.

What is an executable knowledge platform?

An executable knowledge platform is a digital environment where knowledge can be discovered, understood, calculated, tested, connected, saved, verified and shared—not merely read. Instead of separating reference material, calculators, worked examples, code, practice and modelling into unrelated products, MW SysArc connects them around the same concept.

An executable knowledge unit is the reusable component: a concept expressed through its explanation, formula or method, inputs, outputs, assumptions, limitations, sources and executable implementation. Compatible units can be connected into decks and rooms so the result of one becomes a meaningful input to the next.

DiscoverFind knowledge by problem, term, formula, symbol or code.

UnderstandSee the relationship, reasoning, assumptions and limits.

ExecuteRun it with real inputs and inspect the complete working.

ComposeConnect units into models, learning paths and workflows.

VerifyRetain sources, versions, units and calculation lineage.

ApplyUse the result for learning, research or practical work.

Category: Executable Knowledge Platform. System: Executable Knowledge Infrastructure. Component: Executable Knowledge Unit.

The founder

Harald conceived the platform, directs its architecture and product development, and decides how the calculators, explanations, learning paths and connected workspaces fit together. His aim is straightforward: a useful tool should not merely produce a number. It should show the relationship being used, explain what the result means and state where the method can fail.

Harald's personal website is haraldangell.com. The wider MW SysArc company and systems work is presented at mwsysarc.com.

Why this platform exists

Many calculator sites stop at “enter values, receive answer.” MW SysArc Tools is designed around a longer chain: identify the problem, understand the model, inspect the formula, calculate locally, interpret the result and recognise its limits. Educational tools can also connect the mathematics to Python, C, C++ and Linux x86-64 assembly implementations.

Private by defaultOrdinary calculator inputs remain in the browser.

The answer stays freeMembership pays for persistence and organisation, not the result.

Explain the methodFormulas, worked steps, assumptions and limitations accompany results.

Build for connectionTools are reusable components for learning paths, decks and calculation rooms.

How thousands of tools are developed

The platform uses a shared calculation architecture so definitions can power canonical calculator pages, search, related tools, exports and future connected workspaces without copying the underlying logic. Development combines Harald's product direction and systems design with programmatic generation, AI-assisted implementation and automated verification.

Scale is not presented as proof of correctness. New batches are checked for duplicate identifiers, tested against finite default results, compiled with the complete application and verified after deployment for working canonical URLs, search inclusion and sitemap coverage. Calculators still provide models and estimates—not professional, legal, medical, tax or investment advice.

Corrections and contact

A large computational library improves when users challenge it. If a formula, explanation, assumption, unit or edge case appears wrong, send the calculator URL and a description to support@mwsysarc.com. Corrections are treated as part of the product, not as an inconvenience.