Free office & pdf software
17 free and open source apps for office suites, PDF and email.
Replace paid software
Microsoft Office4 alternativesOffice suite (Word, Excel, PowerPoint)
Microsoft Word4 alternativesWord processing
Microsoft Excel4 alternativesSpreadsheet
PowerPoint4 alternativesPresentation
Adobe Acrobat6 alternativesPDF editing and conversion
Outlook3 alternativesEmail and calendar
Microsoft Visio3 alternativesDiagramming and flowchart
Microsoft Project4 alternativesProject planning and schedulingAll office & pdf apps
LibreOfficeOpen-source office suite that replaces Microsoft Office: Writer, Calc, Impress and Draw.Office & PDFOpen source
ONLYOFFICE Desktop5,705Open-source office suite with a ribbon interface like modern Office.Office & PDFOpen source
WPS OfficeLightweight office suite from Kingsoft that looks almost identical to Microsoft Office.Office & PDF
Google Docs, Sheets, SlidesGoogle's browser-based office suite, free with a Google account.Office & PDF
Sumatra PDF17,957Very lightweight open-source PDF reader for Windows.Office & PDFOpen source
PDFsam Basic4,661Open-source desktop tool to merge, split, rotate and extract PDF pages.Office & PDFOpen source
PDF24 CreatorFree PDF toolbox from Germany: compress, merge, split, convert to Word, OCR, sign and password-protect.Office & PDF
Stirling-PDF95,986Open-source PDF toolkit you host on your own server with Docker, with 50+ operations.Office & PDFOpen source
Dorabot PDF toolsFree PDF tools from Dorabot that run in your browser with no sign-up.Office & PDF
ThunderbirdOpen-source email client from Mozilla, the makers of Firefox.Office & PDFOpen source
eM ClientModern Outlook-style email client with calendar, tasks, contacts and Exchange support.Office & PDF
Mailspring17,998Clean, open-source email client with fast search and a unified inbox for several accounts.Office & PDFOpen source
draw.io9,244Open-source diagramming tool for flowcharts, org charts, network diagrams, BPMN and UML.Office & PDFOpen source
Excalidraw135,319Open-source, hand-drawn style whiteboard that runs in the browser.Office & PDFOpen source
ProjectLibreOpen-source project planner similar to Microsoft Project, with Gantt charts and critical path.Office & PDFOpen source
GanttProject1,119Lightweight open-source Gantt chart tool, enough for small and mid-sized project plans.Office & PDFOpen source
LanguageTool15,236Open-source spelling and grammar checker for English and about 30 other languages.Office & PDFOpen source
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