Everything here works today, in a browser, free, with no account.
This list is long and detailed, but incomplete. Use your browser’s find (Ctrl+F, or ⌘F on a Mac) to search here for a feature you are interested in. If you only want to know whether the thing is any good, diving in saves time.
50 things it does.
| Native solver for steady-state (single moment) simulation. |
| EPANET 2.3.5 solver for extended-period simulations, with a solver comparison display. |
| Auto-recalculate option. |
| Multiple open project tabs, saved in the browser or to an ".epp" file, with locking for office network collaboration. |
| Install for offline use. |
Network import and export as EPANET .inp, plus network export to GeoJSON and DXF. |
Update the open project from an EPANET .inp: elements with matching IDs take the file's values, new ones are added, nothing is deleted, and one undo reverses it. |
| Tables export to ODS, XLSX, and CSV; Shapes import from shapefile, GeoJSON, and DXF; surveyed points import as junctions; clipboard copy/paste. |
| Workspace file: save your box layout, panes, and display options, and import them on another screen or browser. |
| Many example projects, each loaded and solved in one click. |
| Libraries of patterns, curves, controls, rules, pipe types, and fittings, importable from another project file. |
| Screenshot tool with enhanced resolution and a markup pen. |
| World map canvas or your own backdrop. |
| XY to Lat/Lon conversion import wizard. |
| Conversion of a project copy to another coordinate system and other units, and new projects in a real EPSG projection. |
| Place name search, and elevations filled in from a digital elevation model. |
| Junction, reservoir, tank, pipe with vertex draw and edit mode, pump, valve, and annotation text. |
| Junction and pipe chain draw, with pipe split offered contextually when a junction lands on a pipe. |
| Draw reference Shapes (points, lines, and polygons), managed in a Shapes table. |
| Copy and paste properties between assets. |
| Customers: metered services with demand, service count, and pattern, each connected to the node or pipe that serves it. |
| Custom properties on any kind of asset, with your own labels and limits, overridable by a scenario, and flagged in place when a value breaks its limits. |
| Customizable node and link labels: prefixes, suffixes, separator, drop order, and automatic or manual placement. |
| Find, replace, and go to elements, including complex queries in your language. |
| Mass-edit assets by Find and replace, Select area, or spreadsheet Tables. |
| Network coloring: three to seven ranges, six ways of placing the breaks (or type your own), and 41 color ramps. |
| Multi-line annotation text with bold, rotation, and association to assets. |
| Independent size settings for text, symbol, and pipes. |
| Graphs: HGL profiles with path editing, time series, contour on the map, frequency distribution, and a flow balance of production against consumption. |
| Time series graphs at the foot of Properties and as bubbles on the map, including tank depth. A bubble’s display is set per scenario. |
| Extended-period simulation with patterns for demands, reservoir head, and pump speed. |
| EPANET-style rule-based controls. |
| Pump, efficiency, head loss, and tank volume curves, kept in the Libraries box. |
| EPANET run report. |
| Color ranges constant through a simulation. |
| Water quality: age, share from a source, chemical decay, and multi-species water quality (EPANET-MSX). |
| Pump energy report: operating share, efficiency, power, energy used, and cost including a peak demand charge. |
| Fire flow analysis: which junctions miss their fire flow, and which pull the rest of the system below its limits. |
| Criticality analysis, which removes each pipe, pump, and valve in turn and reports the effect. |
| Demand scaling, which finds the largest demand scale the system can carry. |
| Scenarios with overrides marked on the map, Manage overrides, and a scenario comparison report. |
| Alternatives with an inheritance tree, overrides mergeable upward into the alternative above, Presentation and Calculation override categories, ready-made scenarios in every new project, a Basic mode, and many more management features. |
| Searchable user manual. |
| Every setting in one box, searchable by the words you would use. |
| Dockable boxes that auto-hide to an edge tab. |
| One Water menu holds everything about water modeling, assets included. |
| Editable, pasteable, spreadsheet-like asset tables. |
| Snap to objects, which enhances the value of DXF and shapefile Shapes import. |
| Twenty-seven languages, and every word is considered for translation. |
| Free software under the GNU GPL, source in the open. |
| No account, and no visitor identifier or count of you unless you say yes. |