Datum

Tools to plan projects.

Desktop software for technical work: scheduling and project control, data analysis and graphs, materials selection, system simulation and control, engineering calculations, finite-element and pipe stress analysis, intelligent P&IDs, and more on the way. Open source; your files stay on your computer.

Get the appsExplore the network
PlanSchedule and trackPlotAnalyse and graphAtlasSelect materialsSimModel and simulateCalcCalculate and checkMeshAnalyse stressesPipePipe stress analysisSchemaIntelligent P&IDs
01 / The appsWindows 10 and 11 · updates itself

Toolsthatworkthesameway,foreveryproject.

Each app does one kind of technical work well. They share one window, one ribbon, one help system and one updater, so learning one means knowing them all.

Datum Home v0.1.5

One small window to install, update, open and remove every Datum app. It checks for new versions when you open it. Prefer just one app? Download it on its own below.

Get Datum Home2.0 MBSource
A / Datum Planv0.5.2 · 30 Oct 2026
Datum Plan: the main window

Datum Plan

Beta

Plan, schedule, track and report your projects: one small, fast app for Windows.

For Project managers, planners, engineers and contractors.

  • A task sheet that works like a spreadsheet, with formula columns and Sheets tabs.
  • Critical path to the minute: calendars, constraints, all link types, levelling with a preview of what moves.
  • Resources, man-hours and costs with workload and manpower by trade; Tracking Gantt with 11 baselines; earned value, earned schedule and S-curves from each period's progress.
Download5.0 MBAbout Plan

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B / Datum Plotv0.3.1 · 29 Oct 2026
Datum Plot: the main window

Datum Plot

Beta

Analyse data and make publication-ready graphs: statistics, regression, curve fitting and page layouts, in one app for Windows.

For Scientists, researchers, lab teams and students.

  • A linked chain: data tables → analyses → results → graphs → layouts. Change a value and every result and graph updates.
  • Data tables for every kind of experiment (XY, groups, two factors, counts, survival, nested, many variables) and worksheets with units and column formulas that update as the data change.
  • Import CSV, TXT, .xlsx and .pzfx files, plate readers and many runs at once; large data sets stay quick.
Download115 MBAbout Plot

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C / Datum Atlasv0.2.1 · 29 Oct 2026
Datum Atlas: the main window

Datum Atlas

Beta

Choose the right material: property charts, selection and referenced data, in one app for Windows.

For Design and materials engineers, and students.

  • About 250 materials from every family, compiled from open and public sources. Every value names its source; 73 values are checked against published datasheets so far, and gaps stay gaps, never zero.
  • Property charts of any two properties or of your own formulas, with family envelopes, zoom, pan, the best materials labelled and labels kept apart; bar charts; up to four charts side by side.
  • 25 design goals and a library of 47 performance indices, with an index builder; a goal sets the axes, the selection line and the limits in one pick, and explains why.
Download2.7 MBAbout Atlas

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D / Datum Simv0.2.0 · 29 Oct 2026
Datum Sim: the main window

Datum Sim

Beta

Model and simulate dynamic systems: block diagrams, control and motors.

For Control, mechanical, electrical, process and mechatronics engineers, researchers and students.

  • Draw a model as blocks and wires, press Run and watch live scopes
  • Scopes with two measuring cursors, step-response marks, comparison of the last five runs, stacked plots, and PNG or SVG pictures
  • A signal probe: hover any wire after a run to read its value
Download86 MBAbout Sim

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E / Datum Calcv0.1.8 · 30 Oct 2026
Datum Calc: the main window

Datum Calc

Alpha

Engineering calculations with real units, as readable maths, with checks and a printable calc sheet.

For Mechanical, process, structural and electrical engineers, students and lecturers: everyone who writes calculations.

  • Equations with real units: about 200 units, SI with prefixes and US customary, absolute and difference temperatures, torques in N·m, dimension errors caught on the line.
  • Readable maths: what is shown is drawn from the same expression the engine computes.
  • Checks with PASS or FAIL and the utilisation ratio.
Download2.3 MBAbout Calc

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F / Datum Meshv0.3.1 · 30 Oct 2026
Datum Mesh: the main window

Datum Mesh

Beta

Finite-element analysis on the desktop: stresses, deflections and temperatures in parts and frames.

For Mechanical, structural, process and aerospace engineers, students and lecturers.

  • Parts meshed automatically into quality triangles, finer where you ask, and solved in plane stress, plane strain or heat conduction
  • Contours of von Mises and principal stress, displacement, safety factor, temperature and heat flux; hover anywhere to read values
  • An equilibrium check after every solve (a heat balance for heat models): the reactions are added up against the loads
Download3.1 MBAbout Mesh

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G / Datum Pipev0.1.8 · 30 Oct 2026
Datum Pipe: the main window

Datum Pipe

Alpha

Pipe stress analysis on the desktop: displacements, support loads, nozzle loads and code stresses, with an automatic isometric.

For Piping, stress, mechanical, process and plant engineers, consultants and students.

  • An element table that draws the piping in 3D as you type: true diameters, insulation, bends, tees, reducers, valves, flanges and support symbols
  • Pipe sizes ½" to 24" in every schedule, five piping materials with properties against temperature and their sources, and your own sizes and materials
  • Anchors, one-way rests, guides, line stops and restraints with gaps and friction, skewed restraints, springs, constant-force supports and imposed equipment movements
Download2.9 MBAbout Pipe

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H / Datum Schemav0.1.12 · 30 Oct 2026
Datum Schema: the main window

Datum Schema

Alpha

Intelligent P&IDs and process flow diagrams: draw, check and list.

For Process, chemical, mechanical, piping and instrument engineers, operators and students.

  • About 80 symbols of our own, following ISO 10628-2 and ISA-5.1
  • Plant objects in a plant › unit › area hierarchy; symbols are views, every change is recorded
  • A class library you can extend with your company's attributes
Download3.9 MBAbout Schema

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02 / Built the same wayEngine · window · release · memory

Onemethodforeveryapp.

  1. A · Engine

    Calculation first

    Every app has its own engine in a pure Rust crate, with unit tests. The window only shows what the engine computes.

  2. B · Window

    One design

    The same ribbon, sidebar, help beside every tool, printing and themes in every app. Only the accent colour changes.

  3. C · Release

    Small and often

    Small numbered releases, each one checked and installed with one click from inside the app.

  4. D · Memory

    Written down

    Every plan, decision and session is recorded in the repositories and drawn as one map: the Datum network.

03 / Latest releasesThe newest of each app

Latest releases

  1. Datum Calcv0.1.8What visitors asked for: complex numbers for AC circuits, and torque in N·m.
  2. Datum Meshv0.3.1Sketch tools: shape a part's section with rounds, bevels, cut-outs and patterns before it is solved.
  3. Datum Pipev0.1.8Friction at rests and guides.
  4. Datum Planv0.5.2Better-looking charts that are never cut off.
  5. Datum Schemav0.1.12Tell Me shows the drawing behind it, DEXPI import, a check valve's direction, bend points kept, the logo in Excel.
  6. Datum Atlasv0.2.1The publisher name for the whole Datum family.
  7. Datum Plotv0.3.1The family publisher name.
  8. Datum Simv0.2.0Reusable models: masks and My blocks.