Guides
What is SaaS?
SaaS is software a company runs for you. You open it in a browser or an app and pay to keep using it, instead of installing a program on every computer and looking after the servers yourself.
What the letters stand for
SaaS is short for software as a service. The vendor hosts the product. Your team signs in. Updates arrive for everyone at once. When someone joins, you add them. When someone leaves, you remove them. That is the model.
A program in a box used to live on a disk, or on a server in the office. A SaaS tool lives with the vendor. You reach it with a login. The practical questions are who can sign in, where the history lives, and what the bill does when the team grows.
SaaS explained with tools you can already name
You have used this pattern even if nobody called it SaaS. Slack and Microsoft Teams are SaaS for team chat. HubSpot, Salesforce, Pipedrive, and Dynamics 365 are SaaS for customer records. monday.com, Asana, Jira, and Trello are SaaS for work. WhatsApp is a personal messenger that many crews also use for work, which is a different bargain: it is already on the phone, and the company often does not own the history.
This site grades those products for one company at a time. A cafe, a shop, and a desk team will not pick the same tool. A hospitality crew on personal phones may already talk in WhatsApp. A company that lives in Microsoft 365 may already have Teams. A sales team may already keep deals in HubSpot or Salesforce. The product is not better in the abstract. It fits this way of working, or it does not.
How to choose one
Start with the job, not the logo. Chat, customer records, and task boards are different jobs, which is why they sit in separate categories here.
Then ask four things. Will the people who do the work actually open it, including people who are not at a desk? Can the company still see the history when someone leaves? Does the price stay understandable as headcount changes? Does it sit next to the tools you already pay for?
The comparison pages name the tradeoffs in writing. The quiz takes a company profile and scores the options against it. If chat is the first decision, start there.