This is a curated list about tools for everything from productivity to hosting to development tools to designing. These tools are all digital i.e. either app, online service, or downloadable software. Most of them are either free or have limited free option that is enough for startups. Feel free to suggest and contribute in this list.

• GitHub - https://github.com
• BitBucket - https://bitbucket.com
• GitLab - https://gitlab.com

• Amazon AWS - https://aws.amazon.com
• Microsoft Azure - https://azure.microsoft.com
• Google Cloud - https://cloud.google.com
• Digital Ocean - https://digitalocean.com
• Linode - https://linode.com
• Vultr - https://vultr.com
• Heroku - https://www.heroku.com
• OpenShift by Red Hat https://www.openshift.com
• AppFog - https://console.appfog.com
• BlueHost - https://www.bluehost.com
• DreamHost - https://www.dreamhost.com

• GitHub pages - https://pages.github.com
• Google FireBase - https://firebase.google.com/products/hosting
• Surge - https://surge.sh
• Netlify - https://www.netlify.com
• Vercel - https://vercel.com

• CloudFlare - https://www.cloudflare.com/
• ClouDNS - https://cloudns.net/
• Let's Encrypt - https://letsencrypt.org/

• Pingdom http://tools.pingdom.com/fpt pingdom.com - Website monitor
• Google Page Insight https://developers.google.com/speed/pagespeed/insights
• Web Page Performance Test - http://www.webpagetest.org/
• GTMetrix http://gtmetrix.com/

• Import.io - https://www.import.io/
• Web Hose - https://webhose.io/scraping-tools
• Dexi.io - https://dexi.io/
• Parse Hub - https://www.parsehub.com/
• 80Legs - http://80legs.com/
• Scraping Hub - https://scrapinghub.com/
• Scrapy - https://scrapy.org/
• Scraper - https://chrome.google.com/webstore/detail/scraper/mbigbapnjcgaffohmbkdlecaccepngjd
• Web Scraper - https://chrome.google.com/webstore/detail/web-scraper/jnhgnonknehpejjnehehllkliplmbmhn
• Scraping API: https://www.abstractapi.com/web-scraping-api

• Microsoft Visual Studio Code - https://code.visualstudio.com/
• Microsoft Visual Studio (IDE) - https://www.visualstudio.com/
• Sublime Text - https://www.sublimetext.com/
• Atom - https://atom.io/
• PHPStorm - https://www.jetbrains.com/phpstorm/
• WebStorm - https://www.jetbrains.com/webstorm/
• NetBeans PHP - http://netbeans.org/
• Eclipse - https://eclipse.org/

• CodeAnywhere - https://codeanywhere.com
• Cloud9 - https://c9.io
• Koding - https://koding.com
• Humanitec - https://humanitec.com

• JSFiddle - https://jsfiddle.net
• Plunker - https://plnkr.co/
• CodePen - http://codepen.io/
• JSBin - https://jsbin.com/

• Respresso - https://respresso.io/

• FileZilla - https://filezilla-project.org/
• Laragon - https://laragon.org/
• XAMPP - https://www.apachefriends.org
• WinScp - https://winscp.net
• Putty - http://www.putty.org/

• Code Climate - https://codeclimate.com
• JSLint - Usually available as plugin for IDEs/Editors

• Sauce Labs - https://saucelabs.com/

• MailGun - http://www.mailgun.com , http://www.mailgun.com/google
• SendGrid - https://sendgrid.com
• MailChimp - https://mailchimp.com
• Mandrill - http://www.mandrill.com/
• AWS SES - https://aws.amazon.com/ses/
• Mail Trap (for testing only) - https://mailtrap.io/
• Email Validation API - https://www.abstractapi.com/email-verification-validation-api

• OneSignal - https://onesignal.com
• Pusher - https://pusher.com
• Twilio - https://www.twilio.com

• Headway - https://headwayapp.co/

• AreYouInterested - https://areyouinterested.co/
• SurveyWave - http://surveywave.xyz/

• WordPress - https://www.wordpress.org
• Drupal - https://www.drupal.com
• Joomla - https://www.joomla.org

• WooCommerce for WordPress - https://www.woocommerce.com
• Magento - https://www.magento.com
• OpenCart - https://www.opencart.com
• Prestashop - https://www.prestashop.com
• Shopify - https://www.shopify.com

• Google Analytics - https://analytics.google.com
• Heatly - https://www.heatlyanalytics.com
• New Relic https://newrelic.com/
• Inspectlet http://www.inspectlet.com/plans
• Zoom Analytics http://zoomanalytics.co/
• LiveSession - https://livesession.io/

• Wave Apps - https://www.waveapps.com

• HubSpot CRM - https://www.hubspot.com/products/crm
• Capsule CRM - https://capsulecrm.com
• Insightly - https://www.insightly.com
• Bitrix24 (CRM version) - https://www.bitrix24.com/tools/crm/
• ZohoCRM - https://www.zoho.com/crm/
• Google Contacts (can be used as lightweight CRM) - http://contacts.google.com

• Slack - https://slack.com/
• Microsoft Teams - https://teams.microsoft.com/
• Mattermost - https://mattermost.com/
• Rocket.Chat - https://rocket.chat/
• Twist - https://twist.com/

• Zendesk Chat (formerly Zopim) - https://www.zopim.com/
• Olark - https://www.olark.com/
• Facebook Messenger - https://web.facebook.com/business/products/messenger-for-business
• WhatsApp for Business - https://www.whatsapp.com/

• Facebook - http://facebook.com
• Twitter - http://twitter.com
• LinkedIn - http://linkedin.com
• Instagram - http://instagram.com
• Pinterest - https://www.pinterest.com/
• YouTube - http://youtube.com

• HubSpot - https://www.hubspot.com/
  • Marketing: https://www.hubspot.com/products/marketing
  • Sales: https://www.hubspot.com/products/sales
• Website Grader by HubSpot http://grader.com
• Buffer App - https://buffer.com
• HootSuite - https://hootsuite.com
• TweetDeck - https://tweetdeck.twitter.com
• CrowdFire - https://www.crowdfireapp.com
• Ubersuggest - http://ubersuggest.org/
• Visual Website Optimizer - https://visualwebsiteoptimizer.com/
• Tweriod - http://www.tweriod.com/
• My Site Auditor - http://mysiteauditor.com
• Free traffic increase - http://www.10khits.com/
• WooBox - http://woobox.com/
• Add Shoppers - http://addshoppers.com
• BuzzSumo - http://buzzsumo.com/
• Static html app - https://statichtmlapp.com/
• Hashtagify - http://hashtagify.me/
• Ritetag - http://ritetag.com/
• Tagboard - https://tagboard.com/
• Trendsmap - http://trendsmap.com/
• Shortstack - http://www.shortstack.com
• Post Planner - http://www.postplanner.com/

• Microsoft OneNote - https://www.onenote.com/
• Google Keep - https://keep.google.com/
• Evernote - https://evernote.com/
• Pocket - https://getpocket.com

• Jira - https://www.atlassian.com/software/jira
• Asana - https://asana.com
• Trello - https://trello.com
• Airtable - https://airtable.com
• Basecamp - https://basecamp.com
• Wrike - https://www.wrike.com
• ClickUp - https://clickup.com
• Monday - https://monday.com
• Meister Task - https://meistertask.com
• Pivotal Tracker - https://www.pivotaltracker.com
• Microsoft Todo - https://todo.microsoft.com (Replacing Wunderlist)
• Todoist - https://todoist.com
• Taskade - https://www.taskade.com
• Nozbe - https://nozbe.com
• I Done This https://idonethis.com

• Toggl - https://toggl.com/
• PrimaERP - https://primaerp.com
• ClockIt - https://clockit.io/
• Bitrix24 HR System - https://www.bitrix24.com/uses/free-hr-system.php
• Pomodoro Technique - https://en.wikipedia.org/wiki/Pomodoro_Technique

• Biteable - https://biteable.com
• Powtoon - https://www.powtoon.com
• Animoto - http://animoto.com/
• Openshot - https://www.openshot.org

• Unsplash - https://unsplash.com
• Pexels - https://www.pexels.com/
• Shopify Burst - https://burst.shopify.com/
• Place Image (Stock photos generator) - http://placeimg.com/
• Undraw - https://undraw.co/illustrations
• DrawKit - https://www.drawkit.io/
• Excalidraw - https://excalidraw.com/
• Icons8 - https://icons8.com/

• Shopify Logo Maker - https://www.shopify.com/tools/logo-maker
• Logo Joy - https://logojoy.com
• Logaster - https://www.logaster.com/
• Cool Text - http://cooltext.com/
• Online Logo Maker 24 - http://onlinelogomaker24.com
• Free Logo Services - http://freelogoservices.com
• Graphic Springs - http://graphicsprings.com
• Design Mantic - http://designmantic.com
• Zillion Designs - http://zilliondesigns.com
• Logo Maker - http://logomaker.com

• Pagemodo http://www.pagemodo.com
• Canva - https://www.canva.com
• Snappa - https://snappa.com
• Photoshop - http://www.adobe.com/products/photoshop.html
• Photoshop Express - http://www.photoshop.com/tools
• Pixlr - https://pixlr.com/
• Fotor - http://www.fotor.com/
• Create GIF - http://gifbrewery.com/
• Stamp creator - http://www.speedystamps.co.uk/
• Method Draw (SVG Editor) - http://editor.method.ac
• AConvert (Image to SVG Converter) - https://www.aconvert.com/image/png-to-svg/
• Image Compression and Optimization API - https://www.abstractapi.com/image-processing-optimization-api