Note: some of the links on this page are affiliate links. For more information, see this disclosure.
All of the tools within this section will focus on helping you acquire more customers. I've broken these down into specific channels to make it a little easier to filter through. Some of these tools do the same job, but I've listed them out so you can decide which is the right fit for your business.
Accuranker - real-time search engine ranking checker.
Ahrefs - backlink and content analysis tool, as well as a keyword research tool.
Majestic - backlink analysis tool.
Moz - keyword research, link analysis and on-page SEO tool.
SEMrush - keyword research, SEO research and link analysis tool.
Authority Labs - keyword ranking checker.
Term Explorer - keyword research tool.
Screaming Frog SEO Spider - technical SEO tool for crawling web content.
Deep Crawl - entreprise SEO crawling software.
SERP Turkey - SERP snippet testing platform.
Answer the Public - keyword research tool.
Storybase - keyword research tool.
WordPress SEO from Yoast - on-page SEO tool for WordPress websites.
SearchMetrics - enterprise SEO and content marketing platform.
Search Man - keyword research for apps.
Long Tail Pro - keyword research tool.
Keyword Snatcher - keyword research tool.
Botify - enterprise SEO suite.
Authoritas - SEO and content marketing platform for agencies.
Keyword Suggest - keyword research tool.
Image Raider - reverse image search engine for image link reclaimation.
Scrapebox - advanced scraping tool.
Keyword Multiplier - keyword research tool.
Lumanu - content marketing and influencer analysis platform.
HubSpot - full-funnel inbound marketing software.
URL Profiler - content analysis and scraping tool.
BuzzStream - influencer outreach tool.
Market Muse - advanced content analysis platform.
Consumer Barometer - fee consumer data from Google.
BuzzSumo - social media and content analysis tool.
Canva - content creation platform.
Google Public Data - public data available from Google.
PollFish - survey platform.
Survey Monkey - survey software.
Speechpad - text transcripts for video and audio content.
Gleam - online competitions and rewards platform.
FAQ Fox - find out the questions your customers have about you.
Ninja Outreach - blogger outreach platform.
Just Reach Out - journalist and influencer database and outreach platform.
Famebit - social influencer platform.
Revfluence - social influencer platform.
HARO - press request alert service.
ResponseSource - press request alert service.
Muck Rack - PR database and outreach platform.
Mention - brand mention monitoring.
GroupHigh - blogger database and outreach platform.
AdEspresso - Facebook advertising optimization platform.
WordStream - paid advertising platform.
Moat - see examples of other companies paid ads.
Thunderclap - coordinate social sharing from large groups at the same time.
Buffer - social media management tool.
Sprout Social - social media management tool.
Hootsuite - social media management tool.
Instagress - Instagram follower bot.
Botsify - create Facebook Messenger bots for your company.
Track Reddit - Reddit tracking and brand management.
BoardBooster - automate your Pinterest campaigns.
WhatsBroadcast - Whatsapp broadcast messaging service.
True Social Metrics - social media analaysis tool.
Social Network Auto-Poster (WordPress) - auto-post out new content to social media from your WordPress site.
TweetFavy - Twitter bot.
UX & Design
HotJar - all-in-one user testing and UX analysis platform.
UserTesting.com - UX analysis platform.
Sketch - design software for Mac.
InVision - prototyping software.
Mixpanel - event-based analytics package.
Dribbble - marketplace to hire designers.
99Designs - marketplace to get small design work completed at a low price.
Bayesian Calculator - Bayesian A/B test calculator.
Jaco - watch and analyze your website visitors.
Balsamiq - wireframing design software.
Five Second Test - platform to measure people's first impression of your design.
Optimizely - testing and optimzation platform.
Crazy Egg - heat and scroll mapping software.
Google Analytics - analytics from Google.
Mimer Metrics - custom analytics package.
Amplitude - event-based analytics package.
Cyfe - metrics dashboard to pull in data from a variety of services.
Heap - mobile and web analytics package.
Neatly - metrics dashboard to pull in data from a variety of services.
LeadIn - free email capture forms.
MailChimp - email marketing platform.
SumoMe - email capture and list building tools.
OptinMonster - email capture platform.
WPForms - form builder for WordPress.
Intercom - customer messaging platform.
InfusionSoft - email automation software.
Really Good Emails - database of emails from companies around the world.
RocketReach - data enrichment service.
Privy - email list builder.
Mautic - open source marketing automation platform.
TLDR (WordPress) - show unique summaries of your content with email capture CTAs.
Drip - email automation software.
Vero - email automation software.