What the 2020 Stack Overflow Survey Reveals About Today’s Hottest Tech Trends

2020 Stack Overflow Developer Survey Overview

Stack Overflow released its 2020 Developer Survey, the largest global developer survey covering favorite technologies and work preferences, with nearly 65,000 participants from around the world.

Key Highlights

Python fell to third place behind TypeScript, while Rust held the top spot for the fifth consecutive year.

Site Reliability Engineers and DevOps specialists earned the highest salaries; 80% consider DevOps important and 44% work in organizations with dedicated DevOps staff.

52% of respondents recognize the “Hello, old friend” indicator when searching for code solutions, indicating a previously visited result.

More than 75% of developers work overtime occasionally (one to two days per quarter), and 25% work overtime one to two days per week or more.

Australian developers reported the longest average coding experience (16.9 years), followed by the United Kingdom and the United States; the U.S. and U.K. also have the highest average ages (33.7 and 33.1 years).

People of color remain under‑represented among professional developers, though inclusion improves when considering all developers.

90% of respondents turn to Stack Overflow to solve coding problems; only 0.3% had never visited the site.

Over 40% belong to other online developer communities, and more than 15% consider Stack Overflow more popular than the previous year.

Technology Trends

Most Popular Technologies

JavaScript has topped the list for eight consecutive years. TypeScript now ranks above C, while Ruby has dropped out of the top ten, overtaken by Go and Kotlin.

Web Frameworks

jQuery remains the most widely used framework but is gradually losing ground to React.js and Angular. More than 35% of respondents use jQuery, React, an Angular version, or ASP.NET/.NET Core.

Other Frameworks, Libraries and Tools

Node.js ranked first for the second consecutive year, with half of developers using it. Data‑analysis and machine‑learning tools such as Pandas, TensorFlow, and Torch/PyTorch are gaining widespread adoption.

Databases

MySQL remains the most popular database, followed by PostgreSQL and Microsoft SQL Server. Firebase’s popularity has risen, giving it an edge over Elasticsearch.

Most Loved Technologies

Rust has been the most loved programming language for five years in a row. TypeScript surpassed Python to take second place, and Go climbed from 10th to 5th.

Developers’ Favorite and Desired Programming Languages

Rust continues to be the most loved language, while Python tops the list of languages developers most want to learn. Rust also shows growth in the “want to learn” category.

Developers’ Favorite and Desired Web Frameworks

ASP.NET Core overtook React.js as the most popular web framework. Gatsby entered the top five, favored by 60% of respondents, while React.js remains the most desired framework to learn.

Developers’ Favorite Databases

Redis is the most popular database, followed by PostgreSQL and Elasticsearch. IBM DB2 is perceived as the most dreaded, whereas MongoDB is the database technology developers most want to learn.

Development Environment and Tools

Primary Operating Systems

Almost half of respondents use Windows as their main OS, with the remainder split roughly evenly between macOS and Linux.

Highest‑Paid Programming Languages

Globally, developers using Perl, Scala, and Go earn the highest median salaries (around $75 k), while Java developers earn comparatively less. In the United States, Scala developers command the highest salaries.