Compare APM — Process Manager for Linux to these popular alternatives based on real-world usage and developer feedback.

With Elastic Load Balancing, you can add and remove EC2 instances as your needs change without disrupting the overall flow of information. If one EC2 instance fails, Elastic Load Balancing automatically reroutes the traffic to the remaining running EC2 instances. If the failed EC2 instance is restored, Elastic Load Balancing restores the traffic to that instance. Elastic Load Balancing offers clients a single point of contact, and it can also serve as the first line of defense against attacks on your network. You can offload the work of encryption and decryption to Elastic Load Balancing, so your servers can focus on their main task.

HAProxy (High Availability Proxy) is a free, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications.

Sidekiq uses threads to handle many jobs at the same time in the same process. It does not require Rails but will integrate tightly with Rails 3/4 to make background processing dead simple.

A modern HTTP reverse proxy and load balancer that makes deploying microservices easy. Traefik integrates with your existing infrastructure components and configures itself automatically and dynamically.

It is an open-source framework that helps you to create, process and manage your background jobs, i.e. operations you don't want to put in your request processing pipeline. It supports all kind of background tasks – short-running and long-running, CPU intensive and I/O intensive, one shot and recurrent.

Originally built at Lyft, Envoy is a high performance C++ distributed proxy designed for single services and applications, as well as a communication bus and “universal data plane” designed for large microservice “service mesh” architectures.

Background-only application which launches and runs other applications, or opens documents, at specified dates and times.

It is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites. It includes Adaptive process spawning, Advanced process management with graceful stop/start, Emergency restart in case of accidental opcode cache destruction etc.

Background jobs can be any Ruby class or module that responds to perform. Your existing classes can easily be converted to background jobs or you can create new classes specifically to do work. Or, you can do both.

Beanstalks's interface is generic, but was originally designed for reducing the latency of page views in high-volume web applications by running time-consuming tasks asynchronously.

The fastest, most reliable, Redis-based queue for Node. Carefully written for rock solid stability and atomicity.

Deploy apps through our global load balancer with minimal shenanigans. All Fly-enabled applications get free SSL certificates, accept traffic through our global network of datacenters, and encrypt all traffic from visitors through to application servers.

Load Balancers are a highly available, fully-managed service that work right out of the box and can be deployed as fast as a Droplet. Load Balancers distribute incoming traffic across your infrastructure to increase your application's availability.

Delayed_job (or DJ) encapsulates the common pattern of asynchronously executing longer tasks in the background. It is a direct extraction from Shopify where the job table is responsible for a multitude of core tasks.

Kue is a feature rich priority job queue for node.js backed by redis. A key feature of Kue is its clean user-interface for viewing and managing queued, active, failed, and completed jobs.

It ensures that applications are always secure and perform the way they should. You get built-in security, traffic management, and performance application services, whether your applications live in a private data center or in the cloud.

You can scale your applications on Google Compute Engine from zero to full-throttle with it, with no pre-warming needed. You can distribute your load-balanced compute resources in single or multiple regions, close to your users and to meet your high availability requirements.

It is a GCE L7 load balancer controller that manages external loadbalancers configured through the Kubernetes Ingress API.

It comes as a pre-built docker image that enables you to easily forward to your websites running at home or otherwise, including free SSL, without having to know too much about Nginx or Letsencrypt.

node-http-proxy is an HTTP programmable proxying library that supports websockets. It is suitable for implementing components such as proxies and load balancers.

Que is a high-performance alternative to DelayedJob or QueueClassic that improves the reliability of your application by protecting your jobs with the same ACID guarantees as the rest of your data.

It is a web traffic load balancer that enables you to manage traffic to your web applications. It provides autoscaling, SSL offloading, and other advanced features that help you optimize the performance and security of your applications.

Seesaw v2 is a Linux Virtual Server (LVS) based load balancing platform. It is capable of providing basic load balancing for servers that are on the same network, through to advanced load balancing functionality such as anycast, Direct Server Return (DSR), support for multiple VLANs and centralised configuration.

Pound was developed to enable distributing the load among several Web-servers and to allow for a convenient SSL wrapper for those Web servers that do not offer it natively.

Redis -> Sidekiq == Faktory -> Faktory. Faktory is a server daemon which provides a simple API to produce and consume background jobs. Jobs are a small JSON hash with a few mandatory keys.

Hipache is a distributed proxy designed to route high volumes of http and websocket traffic to unusually large numbers of virtual hosts, in a highly dynamic topology where backends are added and removed several times per second. It is particularly well-suited for PaaS (platform-as-a-service) and other environments that are both business-critical and multi-tenant.

It is an HTTP and TCP reverse proxy that configures itself with data from Consul. Traditional load balancers and reverse proxies need to be configured with a config file. The configuration contains the hostnames and paths the proxy is forwarding to upstream services. This process can be automated with tools like consul-template that generate config files and trigger a reload.

Use real-time RUM data from billions of benchmarks to load-balance your traffic between multiple CDNs and cloud services.

It is a simple, reliable & scalable background processing library for Clojure. It has a transparent design & cloud-native architecture.

It is a cross-platform Unix init scheme with service supervision, a replacement for sysvinit, and other init schemes. It runs on GNU/Linux, *BSD, MacOSX, Solaris, and can easily be adapted to other Unix operating systems.

GLB Director is a Layer 4 load balancer which scales a single IP address across a large number of physical machines while attempting to minimise connection disruption during any change in servers. GLB Director does not replace services like haproxy and nginx, but rather is a layer in front of these services (or any TCP service) that allows them to scale across multiple physical machines without requiring each machine to have unique IP addresses.

Vulcand is a programmatic extendable proxy for microservices and API management. It is inspired by Hystrix and powers Mailgun microservices infrastructure.

katran is a cpp library and bpf program to build high performance layer 4 load balancing forwarding plane. katran leverages XDP infrastructure from the kernel to provide in-kernel facility for fast packet's processing.

It is a job queue for PostgreSQL running on Node.js. It allows you to run jobs (e.g. sending emails, performing calculations, generating PDFs, etc) "in the background" so that your HTTP response/application code is not held up. Can be used with any PostgreSQL-backed application. Pairs beautifully with PostGraphile or PostgREST.

Mission-critical automation you can audit, control and run on-prem. No black boxes. No silent failures. No data leaks. Built for teams that cannot afford uncertainty.

You can use it to connect HTTP and TCP services between networks securely. Through an encrypted websocket, it can penetrate firewalls, NAT, captive portals, and other restrictive networks lowering the barrier to entry.

It is an open-source layer 7 load balancer derived from proprietary Baidu FrontEnd. It supports multiple protocols , including HTTP,HTTPS, SPDY, HTTP2, WebSocket, TLS, etc. And it supports multiple load balancing policies.

Posthook provides an API for scheduling tasks at specific times where the only requirement is the ability to make and receive HTTPS requests.

An open-source, FFmpeg-based video encoding API that supports multiple concurrent instances. Easily scale video processing with parallel encoding, efficient resource management, and flexible API en...

Production-grade workflow automation. No drag-and-drop required. Build, version, and deploy your workflows with YAML.

Free cron expression translator for Unix and Quartz. Convert cron syntax to plain English with visual builder and multilingual support.

A powerful abstraction that's become increasingly popular to deliver microservices and modern applications. Provides policy, configuration, and intelligence to service proxies.

It is a background server process for processing messages from Google Pub/Sub. It was designed to be an efficient, configurable process that easily integrates into any ruby app.

Workq is a job scheduling server strictly focused on simplifying job processing and streamlining coordination. It can run jobs in blocking foreground or non-blocking background mode.

It is a library for building fast, reliable, and evolvable network services. It has handled nearly a quadrillion Internet requests across our global network.

Route traffic securely with TLS passthrough and dedicated, GDPR-aligned EU IPs. Whitelist once. Ship anywhere. No MITM.

Run AI coding agents autonomously for days. Maestro is a cross-platform desktop app for orchestrating your fleet of AI agents and projects. It's a high-velocity solution for hackers who are juggling multiple projects in parallel. Designed for power users who live on the keyboard and rarely touch the mouse. Collaborate with AI to create detailed specification documents, then let Auto Run execute them automatically, each task in a fresh session with clean context. Allowing for long-running unattended sessions, my current record is nearly 24 hours of continuous runtime. Run multiple agents in parallel with a Linear/Superhuman-level responsive interface. Currently supporting Claude Code, OpenAI Codex, and OpenCode with plans for additional agentic coding tools (Aider, Gemini CLI, Qwen3 Coder) based on user demand.

Open-source webhook infrastructure for growing SaaS teams. Inbound and outbound webhooks with Standard Webhooks signing, configurable retries, and a dashboard. From $49/mo.

Armada is an orchestration platform for running bots and scrapers at scale on Kubernetes. You write a Python script (Playwright, Selenium, or nodriver), add a JSON config, and Armada handles the rest : distributing jobs across as many pods as you need, rotating proxies, managing browser fingerprints, and monitoring everything in real time through a dashboard. Going from 1 worker to 100+ requires zero code changes. No SaaS, no credits, fully self-hosted.

Provides advanced DDoS protection with next-gen technology, real-time mitigation, and EU-based privacy. Secure your infrastructure with plans starting at €5/mo.