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Top 18 Go cost-optimization Projects
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infracost
Cloud cost intelligence for engineers, AI coding agents, and CI/CD 💰📉 Shift FinOps Left!
GitHub Repository
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SaaSHub
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Project mention: Three Budget-Guardrail Failure Modes That Matter More Than Model Quality (May 2026) | dev.to | 2026-05-19
Source: https://github.com/opencost/opencost/issues/3533 (open, updated 2026-04-06)
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prompt-cache
Cut LLM costs by up to 80% and unlock sub-millisecond responses with intelligent semantic caching.A drop-in, provider-agnostic LLM proxy written in Go with sub-millisecond response
Project mention: Show HN: PromptCache – a self-hosted semantic cache for LLMs (Go and BadgerDB) | news.ycombinator.com | 2025-11-23 -
kubesurvival
💰 Significantly reduce Kubernetes costs by finding the cheapest machine types that can run your workloads
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CloudSlash
Local-first AWS forensic engine. Finds waste via dependency graph analysis and enables safe remediation with Terraform state restoration.
CloudSlash CloudSlash is a local-first AWS forensic engine that automatically identifies and safely remediates cloud waste through dependency graph analysis and mathematical optimisation. Unlike passive monitoring tools, it actively finds unused resources, calculates optimal configurations using linear programming, and provides safe cleanup with rollback capabilities through its "Lazarus Protocol." The tool combines Git/Terraform provenance tracking with sophisticated algorithms to deliver 15-25% cost reductions while maintaining zero-trust security principles.
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aws-ipv4-cost-viewer
CLI tool that shows the future public IPv4 costs for a variety of AWS resources across all AWS regions from an account.
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disk-autoscaler
Resize Kubernetes PersistentVolumes automatically based on Kubecost recommendations.
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savings-estimator
Desktop application for Windows, Mac and Linux that can be used to estimate your Spot savings and optionally prepare configuration for our AutoSpotting Spot optimization engine.
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ckia
ckia (cloud know it all), an open source tool for making recommendations for target cloud account. An open source alternative to AWS Trusted Advisor.
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EBS-Optimizer
Source code of the initial version of the EBS Optimizer tool made available on the AWS Marketplace.
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custom-log-marshaler
Attempt to R.I.P PII or unnecessary info in logs and reduce log ingestion costs in the process.
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cronjob-scale-down-operator
A very simple Operator to Scale down Deployments or StatefulSets during specific time windows (e.g., at night or on weekends) to save resources.
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optipod
OptiPod is an open-source, Kubernetes-native operator that automatically rightsizes CPU and memory requests and limits for your workloads based on real-time and historical usage patterns.
Project mention: Show HN: Claude Code plugin for building Kubernetes CRD operators | news.ycombinator.com | 2026-02-23claude plugin install k8s@sagart-devtools
GitHub: https://github.com/Sagart-cactus/claude-k8s-plugin
Built this partly as a learning exercise in Claude Code's plugin system, and partly because I'm building a larger project where this capability was needed: OptiPod (https://github.com/Sagart-cactus/optipod), a GitOps-safe Kubernetes resource rightsizing operator. Happy to answer questions about the plugin architecture, the hook system, or the operator patterns baked into the skills.
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The repo is at github.com/MachineDotDev/nat-zero and the docs are at nat-zero.machine.dev. It's a Terraform module — point it at your VPC, tell it which AZs and subnets to manage, and it handles the rest.
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kronaxis-router
OpenAI-compatible LLM proxy in Go: cost-optimised routing, response caching, batch API, RAG pre-stage (pgvector + sentence-transformers), agent-gateway sub-service for CLI agents (Claude Code/Anthropic SDK/Gemini CLI)
Project mention: Stop Paying Frontier Prices for Tasks a Local Model Handles Fine | dev.to | 2026-04-08GitHub: github.com/Kronaxis/kronaxis-router
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Project mention: Reconciling Kubernetes cost estimates with CUR / FOCUS billing data | news.ycombinator.com | 2026-05-29
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Go cost-optimization discussion
Go cost-optimization related posts
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Reconciling Kubernetes cost estimates with CUR / FOCUS billing data
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Burn: Experimenting with FOCUS / CUR-based Kubernetes billing reconciliation
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Show HN: Burn, K8s cost CLI that pulls actual spot prices per instance type
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Show HN: Burn – find where your Kubernetes cluster is burning money
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Burn – K8s cost waste by namespace and pod. Just kubectl, no deploy
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Stop Paying Frontier Prices for Tasks a Local Model Handles Fine
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I built a local-first AWS cost killer in Go (Open Source)
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A note from our sponsor - SaaSHub
www.saashub.com | 15 Jun 2026
Index
What are some of the best open-source cost-optimization projects in Go? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | infracost | 12,366 |
| 2 | opencost | 6,590 |
| 3 | terracost | 348 |
| 4 | prompt-cache | 236 |
| 5 | kubesurvival | 187 |
| 6 | CloudSlash | 167 |
| 7 | aws-ipv4-cost-viewer | 89 |
| 8 | awsdtc | 88 |
| 9 | disk-autoscaler | 76 |
| 10 | savings-estimator | 36 |
| 11 | ckia | 21 |
| 12 | EBS-Optimizer | 19 |
| 13 | custom-log-marshaler | 14 |
| 14 | cronjob-scale-down-operator | 8 |
| 15 | optipod | 2 |
| 16 | nat-zero | 2 |
| 17 | kronaxis-router | 2 |
| 18 | burn | 1 |
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