Spreadsheets / Simple database
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Excel
Microsoft Excel 2016: Spreadsheet Software: Excel Free Trial
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Smartsheet
Smartsheet: Less Talk: More Action
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Google Sheets
Google Sheets – create and edit spreadsheets online: for free.
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Tabledo
Create dynamic websites using data from your spreadsheets
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Sheetsu Handlebars
Change web or mobile content with Google Sheet
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Calcapp
Build apps instead of spreadsheets
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Table 2 Site
Generate websites from your Airtable base
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SheetAPI
Transform Google Sheet into a RESTful JSON API