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Chronosphere and PromLabs Make the PromLens Query Builder Open Source for All

Chronosphere has partnered with Julius Volz, co-founder of Prometheus and creator of the PromQL query builder PromLens, to donate PromLens to the Prometheus Organization.

PromLens significantly lowers PromQL's notoriously steep learning curve and provides greater visibility over the query-building process, making it faster and easier to use Prometheus.

PromLens can help Prometheus users across the spectrum - for those engineers new to Prometheus, PromLens features easy-to-interpret, graphical ways to understand language and syntax. Both beginners and experts can rapidly build and analyze queries by having clear views of underlying data.

"For companies to reach their cloud native goals, they need solutions that will make Prometheus easier and faster for their engineers to use," said Martin Mao, CEO of Chronosphere. "Currently too much engineering bandwidth is spent trying to understand and harness the collected metrics. We started collaborating with Julius in 2021 with the goal of removing the high barrier to entry for PromQL users. We made significant progress towards that goal with the launch of our PromLens-based Query Builder in the Chronosphere platform and are building upon that ease-of-use mindset by donating PromLens to the Prometheus community. It's not often that an organization will donate a fully functional tool to open source under the permissive apache license, but we feel this will help engineers spend less time crafting and troubleshooting PromQL queries and more time generating valuable outcomes for their teams."

PromLens will now be part of the Prometheus organization, which is owned by the Cloud Native Computing Foundation (CNCF), and free to anyone to use as a standalone query building app.

Benefits of PromLens include the ability to:

- Edit Confidently: Best-in-class autocompletion, highlighting and inline linting while typing an expression.

- Build Visually: Ability to create and modify PromQL query using a form-based editor

- Debug and Fix: Enter and fix any PromQL query and visualize all of its sub-expressions as a tree

- X-Ray Data: Deeper insights about the values of any label in the tree, along with their number of occurrences

- Detect Hints and Actions: View common query patterns and pitfalls, with warning hints and actions

"Working with Chronosphere, we're reaching our goal of making PromLens open source," said Volz. "We share a mission to remove needless complexity and frustration from querying metrics, and this donation will go a long way towards making this a reality for Prometheus users."

"Successful cloud native observability is contingent on the ability of the Prometheus community to easily grasp languages to query and visualize metrics," said Chris Aniszczyk, Chief Technology Officer of CNCF. "This open source upstream contribution from Chronosphere and PromLabs will help make Prometheus query building possible for engineers with all levels of experience."

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Chronosphere and PromLabs Make the PromLens Query Builder Open Source for All

Chronosphere has partnered with Julius Volz, co-founder of Prometheus and creator of the PromQL query builder PromLens, to donate PromLens to the Prometheus Organization.

PromLens significantly lowers PromQL's notoriously steep learning curve and provides greater visibility over the query-building process, making it faster and easier to use Prometheus.

PromLens can help Prometheus users across the spectrum - for those engineers new to Prometheus, PromLens features easy-to-interpret, graphical ways to understand language and syntax. Both beginners and experts can rapidly build and analyze queries by having clear views of underlying data.

"For companies to reach their cloud native goals, they need solutions that will make Prometheus easier and faster for their engineers to use," said Martin Mao, CEO of Chronosphere. "Currently too much engineering bandwidth is spent trying to understand and harness the collected metrics. We started collaborating with Julius in 2021 with the goal of removing the high barrier to entry for PromQL users. We made significant progress towards that goal with the launch of our PromLens-based Query Builder in the Chronosphere platform and are building upon that ease-of-use mindset by donating PromLens to the Prometheus community. It's not often that an organization will donate a fully functional tool to open source under the permissive apache license, but we feel this will help engineers spend less time crafting and troubleshooting PromQL queries and more time generating valuable outcomes for their teams."

PromLens will now be part of the Prometheus organization, which is owned by the Cloud Native Computing Foundation (CNCF), and free to anyone to use as a standalone query building app.

Benefits of PromLens include the ability to:

- Edit Confidently: Best-in-class autocompletion, highlighting and inline linting while typing an expression.

- Build Visually: Ability to create and modify PromQL query using a form-based editor

- Debug and Fix: Enter and fix any PromQL query and visualize all of its sub-expressions as a tree

- X-Ray Data: Deeper insights about the values of any label in the tree, along with their number of occurrences

- Detect Hints and Actions: View common query patterns and pitfalls, with warning hints and actions

"Working with Chronosphere, we're reaching our goal of making PromLens open source," said Volz. "We share a mission to remove needless complexity and frustration from querying metrics, and this donation will go a long way towards making this a reality for Prometheus users."

"Successful cloud native observability is contingent on the ability of the Prometheus community to easily grasp languages to query and visualize metrics," said Chris Aniszczyk, Chief Technology Officer of CNCF. "This open source upstream contribution from Chronosphere and PromLabs will help make Prometheus query building possible for engineers with all levels of experience."

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IT organizations are preparing for 2026 with increased expectations around modernization, cloud maturity, and data readiness. At the same time, many teams continue to operate with limited staffing and are trying to maintain complex environments with small internal groups. These conditions are creating a distinct set of priorities for the year ahead. The DataStrike 2026 Data Infrastructure Survey Report, based on responses from nearly 280 IT leaders across industries, points to five trends that are shaping data infrastructure planning for 2026 ...

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Every few years, the cybersecurity industry adopts a new buzzword. "Zero Trust" has endured longer than most — and for good reason. Its promise is simple: trust nothing by default, verify everything continuously. Yet many organizations still hesitate to implement Zero Trust Network Access (ZTNA). The problem isn't that ZTNA doesn't work. It's that it's often misunderstood ...

For many retail brands, peak season is the annual stress test of their digital infrastructure. It's also when often technical dashboards glow green, yet customer feedback, digital experience frustration, and conversion trends tell a different story entirely. Over the past several years, we've seen the same pattern across retail, financial services, travel, and media: internal application performance metrics fail to capture the true experience of users connecting over local broadband, mobile carriers, and congested networks using multiple devices across geographies ...

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The rise of hybrid cloud environments, the explosion of IoT devices, the proliferation of remote work, and advanced cyber threats have created a monitoring challenge that traditional approaches simply cannot meet. IT teams find themselves drowning in a sea of data, struggling to identify critical threats amidst a deluge of alerts, and often reacting to incidents long after they've begun. This is where AI and ML are leveraged ...

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